Comet Tail quickly checked the front door. Locked—good. The pink unicorn exhaled a sigh of relief. Since her assistant was away in Trottingham on official business, that left Comet with the observatory all to herself for the night. The colorful filly had no qualms about suspending her studies for the evening in favor of heading for her bedroom, where her night of fun awaited her. Bounding up the spiraling stairs with surprising agility for a pony of her stature, Comet reached her room in a reasonable amount of time. The magenta-maned mare dashed inside and quickly locked this door, too. There was no sense in taking extra risks, even if she was to be completely alone that night.
A smile appeared on the pink pony’s face as she turned toward her bed. Using her unicorn magic, she pulled a package out from beneath the piece of furniture, and gently set it on top of the mattress. Colorful letters on the label clearly indicated the package’s contents: “Silly Filly® diapers for her – Size XXL (Teen)”.
Comet’s heart started beating faster as she observed the diaper package. This was it: Now was when she could finally put on one of these garments, when she could be herself, and indulge without fear of anyone barging in on her. She advanced to her bed and, gently opening the package, levitated out a diaper. The disposable garment was thick, fluffy, and soft, with a breathable, cloth-like exterior. The design was very foal-like: It was a lavender color, with violet trim, magenta tapes (only one on each side), and a white star pattern (which faded when wet). She turned it over and over in her magical grasp, taking in the cute design. I’ll bet this feels as fantastic to wear as it is to look at, the nervous filly thought to herself. She gulped.
Still holding the diaper in midair, Comet unfolded the garment and undid the tapes. First checking that it was oriented properly, she gently slid it up and underneath her hind legs, making sure her tail threaded through the designated hole in the back. Once she brought it up tight around her waist, she taped the diaper shut, pulling it snug, but not too tight. Satisfied that the diaper was on in an acceptable manner, Comet Tail turned to look at herself in her full-length mirror. The sight of herself made her blush.
Staring at her reflection, the yellow-eyed unicorn could see every inch of herself perfectly: Her light pink coat, fading to yellow as it trended toward her legs in a colorful gradient; her long magenta mane and tail, streaked with yellow and orange highlights; and the purple-framed glasses she wore, rather thick and bottle-like, yet somehow not too nerdy on her. What really made her blush, though, was seeing the way she sported her new diaper: Though it covered over her defining trait (a yellow and orange comet cutie mark with a pink and purple tail), it was, in her opinion, the cutest part of her appearance.
Turning from the mirror, Comet experimentally walked around her room. The fluffy bulk between her rear legs was very tangible, and caused her to waddle slightly; a slight rustling noise was also audible, though it was barely more than a quiet swish. This nevertheless caused the unicorn’s face to flush with warmth; she really felt like a little filly again.
There was just one more item she needed to complete the experience, to make this completely perfect. Comet Tail returned to her bed and, after rooting around underneath it for a short while, procured a pacifier, which surprisingly matched her diaper in color and pattern, except it had one big magenta star on the front, rather than the multiple white ones. The pink filly popped the device into her mouth, and started sucking on it. Her cheeks flushed hotter now, and her heart was positively racing. Looking in the mirror again, she couldn’t help but think of how cute she looked, and how absolutely perfect this moment felt: It was every bit as wonderful as she had dreamed it would be! She closed her eyes, reveling in her warm, innocent bliss.
As she was relishing this feeling, Comet Tail started to feel a rather urgent pressure on her bladder, and a subtle rumble in her gut. Her heart, which had calmed down prior to this, started beating faster again, as she knew what it was finally time for. Smiling mischievously, the unicorn spread her rear legs, moving into a slight squatting position -
* * *
“Hey, Twilight, watcha writing?”
With a small yelp, Twilight Sparkle quickly rolled up the scroll she had been writing on, and hastily jammed it into her desk drawer. The quill, now released from the pony’s magical grasp, clattered to the floor. “N-nothing, Spike! Just…another one of my friendship reports to Princess Celestia,” the purple unicorn quickly lied. She turned to face her draconic assistant, giving him an annoyed look. “And how many times have I told you to knock before entering? It’s very distracting to have you barging in while I’m writing; it ruins my concentration!” She bent down and picked the quill back up. Her heart was still beating furiously, but she tried her best not to show any expression that would betray her excited state of mind.
Spike raised a scaly eyebrow. “Friendship report, huh? But you haven’t done anything big with your friends in months. Heck, you haven’t even left the house today! What could you possibly have to write about all of a sudden?”
For a split second, a look of panic crossed Twilight Sparkle’s face, but it instantly vanished as the unicorn regained her composure. “That’s – that’s for the princess to read about, not you. Now run along. I’m very busy, and I need to finish this.”
The diminutive dragon rolled his eyes. “Whatever. If it’s that private, maybe I don’t wanna know,” he said as he turned and exited the room.
Twilight Sparkle breathed a sigh of relief. That was too close she thought to herself. After making sure the door was locked this time, the studious unicorn sat down to finish her story.
* * *
The next day, Twilight Sparkle sat on her bed, reading for the umpteenth time the story she had poured her heart into. She looked up and sighed in frustration. “Oh, why can’t this be me doing these things?” She stood up and started pacing the room, thinking.
As far back as she could remember, Twilight had loved the notion of wearing and using diapers. Every time she saw a little foal wearing one, she’d get excited, and imagine herself in their situation. She wasn’t entirely sure why she felt this way, though she had a pretty good idea: She suspected it had something to do with the short time that she wet the bed as a little filly.
She was so little then (just barely done with potty training), and it had only lasted a few months, but the unicorn vaguely remembered that her parents had resorted to putting her in diapers after trying all sorts of potions and spells. She couldn’t remember what she had thought about it at the time, but it must’ve left a big impression on her, as she could definitely recall having a growing fascination in the years that followed.
Twilight flopped back onto her bed with a loud sigh, wishing she were young again. Her eyes drifted back over to the scroll that contained her story, and her heart began to ache. Right then, she wanted nothing more than to be in her character’s position, to be able to relive wearing - and using - diapers. That wouldn’t be happening anytime soon, though, for one simple reason: How would she hide it?
It always came down to that. With two different assistants living in her house, how was she supposed to sneak a pack of diapers in without getting caught? And even if she did manage to do it, when would she get the time to enjoy them? Of course, this wasn’t even taking into account the nerve-wracking experience of having to actually go to the store and buy them, facing the scrutiny of whoever happened to be around when she did it.
Twilight Sparkle shook her head. She’d never be able to pull it off. What would her friends think if they found out? As wonderful and supportive as they were, the purple pony just couldn’t see them simply getting over the fact that their friend had such a strange, disgusting interest. More importantly, what would the princess think? Would she honestly want to be associated with a student who peed in diapers in her spare time?
Downcast, the unicorn pulled up a pillow and hugged it. “If only I were somepony else,” she sighed wistfully. She closed her eyes and hugged the pillow tighter. “Why can’t I be Comet Tail?” Indeed, the prospect of becoming the character from her story was becoming more appealing by the minute.
Suddenly Twilight stiffened, inspiration flashing before her eyes. Why couldn’t she be Comet Tail? She abruptly sat up and snatched up her story, reading through her character’s description again. Yes, this wouldn’t be hard at all: A color change to her coat and mane, a temporary tattoo covering her cutie mark; these cosmetic alterations could be covered by simple appearance-changing spells easily. That would only leave obtaining a pair of glasses, which, although not completely necessary, would be easy enough as well.
She stood up quickly, an excited grin on her face. “Yes, that’s how I’ll do it!” She began pacing again, the wheels in her mind turning faster than ever. “I’ll give Spike and Owlowicious a bogus mission to Canterlot, while I go to the store as Comet Tail and purchase the goods. Then I’ll sneak the diapers back home under the cover of darkness, and I’ll have a night to myself to try them out. It’s the perfect plan!”
After making sure her saucy story was once again safely hidden in the confines of her desk drawer, Twilight dashed out of the room, eager to set her scheme into motion.
* * *
Afternoon of the following day found a pink and yellow unicorn standing on the outskirts of an unfamiliar town. Twilight Sparkle quickly ran over everything in her head for what felt like the thousandth time.
She had already come up with a clever (if she did say so herself) excuse for sending both of her assistants to Canterlot earlier that morning: she had engineered the mission such that they’d at least need to spend the night, if not the next day or two, in the capital city. The unicorn chuckled to herself. “Good luck finding A History of Eldritch Entities, boys!” she muttered with a smile, before looking back and rechecking her saddlebags.
The bags she carried were an old, tattered pair from her early days in Canterlot. She never wore them in Ponyville, so there wasn’t any chance of anyone recognizing them as belonging to Twilight Sparkle. While this would have been reason enough to use them, they also had the added benefit of being extra large. Their old purpose had been bringing large quantities of books home from the library, but right now they made for the perfect vessel to accommodate a bulky package of diapers.
Last but not least, Twilight ran over her appearance again. From the colors, to the cutie mark, even to the glasses, the unicorn had been thorough in her disguise. She looked not like her old self, but like an exact depiction of the character she loved writing about so much. This was perfect: Nopony would recognize her, for sure!
Which lead to where she currently was. As soon as she had hatched this plan, Twilight Sparkle realized that she couldn’t buy the diapers in her hometown of Ponyville, for two reasons. One: She’d be too nervous to buy that kind of stuff from the store clerks she interacted with on a weekly basis, even if she was disguised (besides, what if she slipped up and mentioned something only Twilight Sparkle was supposed to know?). Two (and this was a big one): If she went around town looking like a stranger, she’d be almost guaranteed to run into Pinkie Pie, who’d invariably attempt to throw her a “Welcome to Ponyville” party. Twilight just didn’t need to be drawing that kind of attention to herself, especially not for this, of all missions.
No, the unicorn had instead decided to bring this venture to the nearby town of Fillydelphia; that way, she could buy the goods in relative peace. Confident beyond a shadow of a doubt that this would work out, “Comet Tail” trotted down the road into the town itself.
As she strolled through the main street of Fillydelphia, the disguised unicorn looked about, familiarizing herself with the general layout. She didn’t want to get lost, especially not on the way back, where she would be carrying her embarrassing cargo. Besides, she needed to stall for time a little bit: Despite her careful planning, Twilight had overestimated the travel time between her town and this one, resulting in her arriving in Fillydelphia earlier than she had wanted. It was supposed to be nice and dark when she got home, so as to bring as little attention to herself as possible.
After walking around the block a few times, Twilight had gotten a pretty good feel for the place, and was sure she’d killed enough time. Starting on another loop of the town, the unicorn headed straight for the pharmacy she had passed about a dozen times, and walked in without a moment’s hesitation.
A bell chimed as Twilight opened the door, and an elderly earth pony in a lab coat looked up from behind the counter. He was cream colored, with bright green eyes set behind thick, bottle-rimmed glasses. He had a thin, wispy, white mane, and his cutie mark, from what Twilight could see, was a group of three brightly-colored pills: Red, yellow, and blue. Smiling a gummy grin, the old pony wheezed cheerfully, “Welcome to Peppy Pill’s Phantastic Pharmacy. What can I do ya for?”
Twilight Sparkle bit her lip. She wanted to talk as little as possible while doing this; the more she interacted with people, the more nervous she’d get, and that wouldn’t do at all. “Oh, no thanks, I’m just looking right now,” she said plainly, keeping the nervousness out of her voice as best she could.
“Okie-dokie, little lady, just ask if ya need help with anything,” replied the pharmacist before busying himself with his previous activity.
Twilight nodded, breathing a sigh of relief as she turned and started casually meandering down the aisles. Though she wanted nothing more than to be in and out as quickly as possible, she didn’t want to make it look like she was too eager, either. She kept her pace, taking slow, deliberate steps, as she feigned interest in skin ointments, sleep aids, hoof care products, and other wares she just didn’t care about.
As she approached the aisle labeled “incontinence and baby products”, the unicorn’s heart started beating faster and faster. Just a few more steps, just a few more excruciating seconds of mock-interest in cough syrup, and she’d be there. She took a few more paces, when suddenly a voice cut the still silence of the small store, causing the unicorn to nearly jump right out of her skin.
“We close in five minutes, ma’am.”
After regaining her composure, Twilight nodded at the gentlecolt, and then turned back to the task at hoof. Not wanting to waste any more time, she headed straight for the diaper aisle, eager to see the selection. Her heart beating faster and faster, she turned the corner, and saw –
- a bit of a disappointment, actually. The pharmacy’s selection of adult diapers was rather skimpy, with only two different brands represented; both were plain white, bland-looking slip-on affairs, to boot.
Twilight Sparkle sighed. Had this really all been for nothing? Would she now have to go home empty-hoofed, with nothing to show for all of her best efforts? Feeling a little panicked, the currently-pink unicorn quickly, desperately scanned the rest of the aisle, hoping to find something more satisfying. When her eyes reached the end, her heart skipped a beat; there, sitting right next to the “Oopsy-Daisy! ®” potty-training pants, was the very item she had hoped to find: “Silly Filly® diapers for her – size XXL (Teen)”.
The excited pony rushed over, poring over the package with the greatest interest. Here they were: The thickest, fluffiest diapers in all of Equestria! Twilight could barely contain her excitement. She had only heard of these before, seeing pictures of them in newspaper and magazine ads. Now that she had them up close, they looked even more amazing. Of course, they weren’t exactly the same as the way they were depicted in her story; she had modeled the pattern after herself, just for fun. Still, the actual design was pretty close to what she had come up with: The diaper itself was indigo in color, with an assortment of white stars and pink comets populating the garment, as well as a few pale yellow crescent moons.
As the excited mare looked over the package, the pony at the counter spoke up again. “Closing time, ma’am. If you’re going to buy something, ya better do it now.”
Twilight Sparkle looked up, slightly startled. She nodded, and looked back down at the package in her magical grasp. “Okay, Twilight, it’s now or never,” she muttered to herself. Heart beating furiously, she headed to the counter, awkwardly setting the package down in front of the elderly stallion.
“Just this, then?” he asked casually.
Twilight gulped as a knot formed in her throat. Why was she so nervous? It’s not like she knew this guy, and besides, she was disguised. There was absolutely no reason for her to be ashamed right now, so why was she sweating so much? And why was her heart beating what felt like a million times a second? She managed to nod and force a smile.
“Okie-dokie, that’ll be fifteen bits.”
The unicorn had the payment out faster than lightning, and hurriedly gave it to the cashier.
“Thank ya very much, ma’am. Have a good evening,” he said as he deposited the money into a basket under the counter.
Her heart beating faster than ever now, Twilight hurriedly stuffed the package into her left saddlebag, and headed for the exit at a brisk pace. Just as she reached the door, the older pony’s voice stopped her.
“Excuse me, missy.”
Twilight Sparkle seized up, her insides feeling like a pretzel. What could he possibly want now? She turned her head back, trying to look as calm as possible, but failing rather miserably.
“Ya don’t have to feel ashamed. I used to wet the bed myself when I was about your age. Everypony’s body grows differently, there’s no shame in that all.”
Twilight’s face turned beet red, and she turned back to the door, quickly leaving the little shop without a word.
Safely on the road back to Ponyville, Twilight Sparkle finally let out a sigh of relief. Her heart was still beating quickly, and she still had a knot in her stomach. True, that experience could have gone worse. It had been fairly nerve-wracking, though, and she was glad it was finally over. Well, almost over, anyway: She still had to get the stuff back to her house without running into anyone she knew.
The sun was already down, the last of its rays causing the area to glow a peaceful pink and orange color. It was twilight, and the unicorn chuckled, the unspoken pun helping to ease her nerves a bit. Twilight on the road at twilight, ha ha. She estimated it would probably take another half an hour or so before she reached Ponyville. It would definitely be dark by then, which would definitely be a good thing. The darker, the better she thought to herself.
Her estimate was fairly accurate, with her arrival at Ponyville’s outskirts well after nightfall. This is it: The final stretch the unicorn thought nervously. Eager to be safely inside of her house already, the unicorn galloped practically full-speed for the carved-out tree she called home.
* * *
Silver Rain cut through the sky at full-speed, skillfully weaving back and forth between giant, puffy clouds. She had been doing this for what felt like hours, but didn’t even feel a bit tired. No sooner had she thought this than a cramp made itself known in her left wing. Okay, maybe she could use a bit of a break.
Scanning the sky ahead of her, the pegasus eventually found a suitable cloud to rest on, one that looked like the perfect mixture of soft and fluffy, yet big and solid. Keeping her eyes focused on her destination, she shot under the cloud at full tilt, then curved back and up, flying upside down in an arc. After double-checking her trajectory, the brash filly pulled her wings in, turning her into a feathered-and-furred missile aimed straight at the center of the cloud. She closed her eyes and screamed excitedly.
“Yaaaaaaaahhhh – OOF!” she cried out as she impacted. White swirls swept around the excited mare, displaced from the sudden landing. Silver Rain stood up, giddily laughing as she surveyed the scene. “That. Was. EXCELLENT!!!” she exclaimed, pumping her forehooves into the air.
After her wild excitement simmered down, Silver plopped back onto her bottom. As she did, she noticed a pool of fresh rain sitting next to her. “Hmm, come to think of it, I am a little thirsty…” she mused to herself. She bent down to drink, and as she did, she got a good look at her reflection.
Staring up at the young mare was a white pegasus, whose fur faded in a gradient to dark blue at the hooves. Her mane and tail, which were long, wild, and free-flowing, matched that hue, and were streaked with a lighter, sky blue color, which matched her eyes. On her flank was a cutie mark depicting a magenta bow, with a rainbow of ribbons streaming beneath it.
Silver eventually stopped admiring herself, and started to drink. The water felt cool, pure, and fresh: It was the most refreshing drink she had ever had. After drinking for what seemed like several minutes, she sat back, her belly full. “Ahh, that’s more like it,” she said, dropping down onto her back. Her eyes drooped a bit, as she realized how tired she was. Right now she wanted nothing more than to rest…
…and to pee. The mare’s eyes widened as she finally realized the pressure in her bladder. She couldn’t get to sleep if she had to go that badly. She stood up, contemplating her options. There wouldn’t be any proper place for her to relieve herself up here. If only…
Suddenly realizing a thickness between her legs, Silver turned to look at her rear. There, as if it had always been there, was a diaper, snuggly wrapped around the mare’s lean bottom. The garment was a bright cyan, with a veritable rainbow of colors decorating the tapes (two on each side) and trim. It was thick and bulky, with a crinkly, plastic feel to it. A mixed pattern of clouds and lightning bolts adorned the diaper, giving it an overall babyish design.
This brought a smile to Silver Rain’s face. “Perfect, I can just pee right here. No need to worry about finding a bathroom!”
Squatting slightly, the pegasus tried to relax her bladder, but nothing happened. “That’s weird…” She readjusted herself and tried again, but again found that she just couldn’t do it. Why couldn’t she go? Her bladder was practically bursting from all the pressure, and yet for the life of her, she just couldn’t get herself to let go, almost as if something was stopping her from peeing right then and there…
* * *
Rainbow Dash’s eyes shot open. She jumped up, and quickly scanned the cloud beneath her: Nothing but unmarred, fluffy whiteness. That was close, she thought, sighing. Too close. That’s the last time I chug a whole gallon of Applejack’s cider before bed. Relieved that she hadn’t relieved herself in bed, the pegasus got up, stretched, and started heading for the restroom, the pressure in her bladder still very strong.
“Heh, if only I did have a cool diaper like that,” the pegasus sighed as she stumbled to the bathroom, still groggy from her sudden waking, “Then I wouldn’t have had to wake myself up, and I could have just - ”
The pegasus stopped herself midsentence. No, it just felt too awkward to say out loud, even if nopony was around to overhear her. She sighed again. Why did she like this kind of stuff, anyway? Was she some kind of freak?
Of course she knew the answer, at least to the first question: That had started back in Junior Speedsters flight camp, during the time she had been bedridden for a few weeks due to a broken bone…or two…or a few. She couldn’t remember what feather-brained stunt she had been trying to pull, but she could vividly recall the shattering pain its failure had brought.
She could also remember being put in diapers for the duration of that hospital stay. Of course she had objected at first: After all, why would a pony as awesome as Rainbow Dash wear something as babyish and uncool as diapers for any reason? Given no other choice, though, the pegasus eventually had to give in and let nature call, and over the course of a few days, her opinion started to change. There was just something exciting about being able to relieve herself right there in bed, some kind of unexplainable thrill that came with being able to “go” in a place that she’d normally get in big trouble for doing that in, that she secretly started to enjoy her situation. It felt…daring. Different. Fun. The pegasus couldn’t explain why she liked it, she just knew that she did.
And then there was the feeling that always came afterwards: The happy, innocent feeling of relief, mixed with the warm comfort of the squishy padding swaddling her, gently pressing up against her -
Rainbow Dash shook her head, her face hot and flush. She had to stop herself: Just the mere thought of using a diaper was starting to weaken her sphincter. The last thing she wanted was to have an accident all over her floor. Too bad I don’t have one of those right now, she thought glumly. Then again, maybe if she were wearing something else…like a pair of underwear, and that fancy dress Rarity had made her for the Gala, she could at least…
Before she could continue along that line of thought, a rushed clip-clop from beneath her cloud jolted Rainbow back to reality. “What was that?” she muttered, shaking the last of the bleariness from her head. She stopped and strained her ears for a better listen.
The sound continued: Clip-clop, clip-clop, coming steadily from the road beneath, as if somepony was galloping at full-tilt. Someone running around at this time of night could only mean one thing: Trouble. Currently forgetting her dire need, Rainbow Dash turned around and hurriedly exited her house, until she was peering over the edge of her cloud at the road below.
There, indeed, was a pony running down the main road into town at a steady gallop. It was hard to tell in the pale light of Luna’s crescent moon whether it was a mare or a stallion below, but Rainbow Dash could clearly see the bulkiness of a filled saddlebag hanging off to the side of the darkened figure. The pegasus frowned, her eyes narrowing. “Looks like there’s a rotten thief on the loose. I’m gonna follow that guy and find out where he’s going!”
* * *
Tired and sweaty, Twilight Sparkle finally arrived at her doorstep. Although the walk (or run, as it were) home had been uneventful, the unicorn still felt uneasy. Maybe it was just her nervousness, but she could swear someone had been watching her during that last stretch of road. Chalking it up to the general stress of purchasing fetish paraphernalia, the unicorn shrugged, and proceeded to open her front door.
No sooner had she pushed the door open than a dark shape, whizzing through the night, smacked right into her side, knocking the unicorn off of her porch, and onto the ground next to it in a rough tackle. In the flurry of movement, her glasses were knocked clear off into a nearby bush.
“Ow! What the - ”
“Get your hooves off of that door!” her assailant cried, pinning her down beneath their body. “Right now!”
That voice…it sounded familiar to Twilight, but it was hard for her to place it, due to the immense throbbing in her head and side…
“No one steals from my friends!” the raspy voice exclaimed, as she reared a forehoof back, winding up for a punch.
Twilight’s eyes instantly widened in recognition. “Stop! Rainbow Dash, it’s me!” she managed to wheeze out from beneath the pegasus’s choking grip.
At the sound of her friend’s voice, Dash stopped immediately. “Twilight? That’s you?”
Rather angrily, Twilight responded, “Of course it’s me! Why wouldn’t it be?”
The Rainbow pegasus squinted. Her friend’s colors seemed all wrong. “You look…different.”
Twilight nearly panicked, but she quickly regained her composure as inspiration struck. “It’s…just this dim lighting. I’m fine. Now, will you please, for the love of Celestia, get off?”
Rainbow Dash thought for a moment, then shrugged. She smiled sheepishly and got off of the unicorn, offering a hoof to help her up. “Eh, sorry ‘bout that. I saw you suspiciously running toward your house, and I saw that big bag you were carrying, and…I guess I thought you were a burglar or something.”
Standing up, Twilight shook her head, trying to rid her vision of the colorful stars swirling before her eyes. “Well, next time, don’t assume things, as doing so hurts everyone involved.”
“Um, yeah, sorry…” Rainbow Dash looked down and noticed the saddlebag, its contents spilled onto the ground. “Oh, let me get that for you.”
Twilight merely rubbed her temples and groaned. “Ugghhh…”
It was too dark to see it clearly, but something about that package looked familiar to Rainbow Dash, though she couldn’t put her hoof on it. Where had she seen a package that shape before? “What’d ya get, anyway?” she asked as she reached over to pick it up.
The unicorn’s eyes bugged out, and she immediately pulled the diaper package out from in front of her friend in a burst of telekinesis. “No!” she instinctively said, perhaps a little too loud.
Rainbow Dash, losing her balance, fell forward. “Ow!” she exclaimed as she stood up, spitting out a mouthful of dirt. “What the hay did you do that for?!”
Sweat started running down Twilight’s neck. She felt awful about treating her friend this way, but she was so close to sneaking the diapers inside, to getting them home without anyone knowing. She couldn’t fail here, not now, not this close to the goal. She couldn’t! “Oh, well, that’s okay, looks like everything here’s under control. I’d love to stay and chat, but I’ve really got to get going, and I’m sure you do too. So, I’ll see you in the morning. Okay? Okay. Bye!”
The unicorn had hurriedly run through the spiel, scooped up her stuff, and dashed inside, practically slamming the door in Rainbow Dash’s face before she could so much as respond.
“What’s gotten into her?” Dash muttered, rubbing her face. “Jeez, I said I was sorry.” Shaking the dust off of herself, she took to the skies and headed home, mulling over her friend’s suspicious behavior.
* * *
Twilight Sparkle, meanwhile, sat inside the front entryway of her house, panting. Her head hurt, and she may have potentially started a problem with one of her best friends, but she had otherwise been successful: She had managed to purchase, and bring home, some diapers, all without anyone else finding out.
The unicorn smiled inwardly, then opened her eyes. The library was still pitch-black. She had been so hasty to get inside that she had forgotten to illuminate the room before entering. Reaching over with her magic, she switched the lights on.
“SURPRISE!!! I bet ya didn’t know we were throwing a party for you, huh? But when I heard that Spike and Owlowicious were going to Canterlot, and that you’d be here all by your lonely little self tonight, I just knew the best way to keep you from being sad would be a big, super fantastarific party with all your friends! Everyone in Ponyville’s here!”
Twilight sparkle sighed with relief. Good thing nothing like that was happening! It almost seemed like it would, though, just because she was trying to hide something so sensitive. She shook her head and chuckled, grateful for the quiet emptiness. Then, picking up the pack of padding with her magic, she headed up the stairs to her bedroom.
* * *
Rainbow Dash was flying laps around the perimeter of her cloud home. Though she still needed to pee, and probably needed to get some more sleep, too, she couldn’t do either of these things; she was just too preoccupied with trying to figure out what her friend had been doing.
“Who goes running around at night with a big, mysterious package, anyway?” the pegasus muttered to herself.
Indeed, the more she thought about it, the more it vexed her. What was Twilight Sparkle trying to hide? What could that package possibly have had, that the unicorn would even injure (albeit inadvertently) her friend over?
“Mysterious package…sneaking around at night…big secret…” Rainbow Dash’s eyes bugged out in realization. Her wings temporarily froze in surprise, and she ended up crashing onto the front “lawn” of her cloud house with a soft whump. Standing up and shaking her head, the cyan pegasus resumed her thought. “I know where I’ve seen a package like that before! That’s a pack of diapers!”
The pegasus had practically shouted that last thought, and she instantly looked around sheepishly, sighing in relief as she noted that nopony was there to overhear that.
She resumed her thoughts. The more she thought on it, the more she knew it to be true: Those were definitely diapers Twilight had been trying to hide, no doubt about it. The implications of this caused Rainbow’s heart to start beating faster.
Twilight Sparkle wore diapers. That had to be it. If she were buying them for somepony else, she wouldn’t have been acting as nervous as she had, or trying to hide it so much, right? So she had to have been buying them for herself. But…why? Only two reasons came to Dash’s mind: Either Twilight wet the bed, or…
Rainbow Dash’s heart skipped a beat as she thought of the alternative. Or maybe…maybe I’m not the only one who likes this kind of stuff.
A firm resolve gripped the pegasus. She had to find out the truth, no matter what. Without a moment’s hesitation, she shot off like a rocket, heading straight for Twilight’s house as fast as she could.
* * *
Everything was finally ready: The door was locked, the disguise discarded, and the package of diapers was hidden safely beneath the bed. All that remained was for Twilight to put on one of the garments she had worked so hard to acquire.
Twilight picked up a diaper she had left out on the bed, and examined it carefully, slowly turning it over in her magical grasp. Hear heart started beating faster as she held the object she had wanted to try for so long. The soft, fluffy garment looked even cuter in real life; she couldn’t wait to wear it! She also didn’t want to rush things, either. No, she resolved to do this slowly, so as to savor the moment.
She lowered the garment so that it was hovering just above the floor, and stepped over it, so that her bottom was positioned just above the diaper. Turning her head so as to get a better view, she carefully brought the diaper up, taking care to thread her tail through the hole properly. Her heart was beating faster now. She was almost done! She pulled the garment up until it was firmly against her waist, then undid the tapes and pulled them tight, fastening them once the garment was hugging her snuggly. Done. She released her telekinesis, and turned to look at her handiwork in the mirror.
Twilight Sparkle’s heart positively raced as she looked herself over in the mirror. It was exactly as she had dreamed it would be! She just looked so cute, sporting that adorable nighttime diaper. She moved around, and was delighted to find that the thick, fluffy diaper was every bit as comfy and bulky as she had thought it’d be. It even made her waddle a bit, and it rustled, just like in her story! Her heart now brimming with joy, the unicorn filly bounced around in giddy glee, happy to finally be indulging herself after waiting for so long.
* * *
All was dark as Rainbow arrived at the abode of her purple unicorn pal. None of the lights appeared to be on inside, save for a lone lamp shining in the upper window. “Ah, she hasn’t gone to bed yet,” the rainbow-maned pegasus noted with a smirk. “Looks like it’s time for some spying.”
Rainbow Dash flew up to the window, carefully approaching at an angle that wouldn’t make her immediately visible to the house’s lone occupant. She alighted on the darkened balcony, right by the edge of the window, and craned her neck toward the glow spilling from behind the glass, peeking a look inside of her unicorn friend’s room. Dash’s heart beat faster at what she saw.
There, plain as day, was Twilight Sparkle, bounding around her room in nothing but a diaper! Not only that, but she looked so happy to be wearing it. This obviously wasn’t a simple case of nighttime incontinence, no: The unicorn had clearly bought those diapers so she could enjoy herself in them.
Rainbow Dash kept watching, her heart in her throat. This meant she really wasn’t alone; there were others out there that shared this strange desire. And one of those “others” happened to be one of her closest friends! A strange mix of relief, happiness, and a little envy swirled through the pegasus, as she just watched on, enjoying the moment almost as much as her oblivious friend seemed to be.
* * *
Twilight finished her jaunt around the room with a cannonball onto her bed. As the pillows and blankets flew every which way onto the floor, the enthusiastic filly couldn’t help but let loose a fit of giggles. It felt so good to just cut loose and act how she wanted! She got off of the bed, and shook her head.
Now that her initial excitement had simmered down a bit, Twilight Sparkle decided that it was time for her to do the one thing she’d wanted to do the most with these diapers: Use them. She looked around the room, and decided that the middle would be the best place to do the deed: It was just solid wood floor there, so she could easily clean up any…leaks. She smiled mischievously, and headed for that spot.
Once in the center of the room, the unicorn got into position: Legs spread out, body slightly lowered; she was almost ready to go. She looked around the room again, feeling butterflies in her stomach. No, no one else was there. Yes, the door was locked. She arched her neck and looked at her rear again. Yes, she was still wearing the diaper. She closed her eyes and took deep breaths. She was just so nervous. She’d never done anything like this before, and she wanted to make sure everything was perfect. She shook her head to clear her mind, and tried to relax, focusing on the moderate pressure in her bladder.
Twilight waited, just trying to relax herself enough to go, but her body was stubborn. After all the years of adhering to the training it had received so long ago, how could it just blatantly disregard it? The unicorn kept readjusting her position every so often, trying anything to get herself to relax and let loose. But no matter how much she waited, nothing seemed to be happening. The lavender pony’s patience started to wear thin.
Then, without warning, Twilight felt a warm trickle leak out of her, and she nearly jumped in surprise. She was starting to do it! She closed her eyes and redoubled her efforts, picturing flowing water: A cool mountain stream, winding its way through rocky outcrops, churning into frothy, turbulent rapids, going faster and faster, quickly gaining momentum until -
All at once the dam broke, and the little unicorn’s bladder gave. What had been a tiny trickle before quickly sped into steady flow, as the filly’s bladder emptied itself into the thick, fluffy diaper. It felt weird to Twilight at first, to be standing in the middle of her room, peeing. And it felt weird to not feel it splashing beneath her, to not hear the steady drizzle that would logically accompany the action she was performing. She smiled, enjoying the feeling, savoring the way the wet, warm padding squished up against her more and more as she continued to go.
When Twilight could feel the front of the garment was just about full, she spread her legs a bit wider, and lowered her rump into more of a squatting position, allowing the flow to reach the bottom of the diaper more easily. This was a tip she had picked up through her countless hours of studying this subject, and it seemed to be working nicely. Her eyes shot open, though, as an unexpected mass of squishy warmth started rushing into the back of her diaper, and her face flushed red as she realized that she had, quite by accident, started pooping as well. Heh, maybe I relaxed myself a little too much she thought. Nevertheless amused by this development, the unicorn smirked mischievously and pushed harder, causing the back of the diaper to rapidly fill up with the thick mess, and the air to fill with the pungent aroma of horse apples. She closed her eyes and relished the feeling, enjoying the utter bliss of feeling like a helpless little foal again.
At length the flow slowed, and eventually stopped. Twilight kept her squat for a minute, making sure the diaper had enough time to absorb everything. When she was sure it was done, she stood up, noting with pleasant surprise the heaviness of the garment between her legs, and waddled over to the mirror.
Surveying herself, she couldn’t help but blush. Now she wasn’t just wearing a diaper, she was wearing a used diaper: The garment was puffy all over (especially in the front and bottom), and very bulgy in the back (and some of the bottom as well). She sure did go! Twilight took a hoof and lightly pressed against the bulge in the back. Warm mess pushed up against her bottom, and she blushed. It felt so…good. She moved the hoof more towards the front of the diaper, and pressed there. The warm, squishiness of the pee-soaked padding pressed against her, and she blushed again. That felt good, too.
As she enjoyed the feeling, a new, naughtier thought crossed her mind, and her face flushed further just from thinking about it. Nevertheless, she couldn’t help it, and she quickly found herself moving her hoof between her legs, pressing the padding in there, too. The young mare let out a little yelp at this, and her heart started beating faster. That felt really, really good! She bit her lip, and moved her hoof back down to the same spot, pressing the thick, squishy padding against herself harder. That just felt so… unbelievably good! Her heart began to race, her body tingled with excitement. Twilight Sparkle closed her eyes, and instinctively started rubbing, working the thick, warm padding between her legs back and forth, back and -
The unicorn was rudely interrupted by the click of a window opening, followed by a panicked yell and a loud thud. Startled, she turned around, only to find Rainbow Dash splayed on her floor, a dazed look on her face.
Twilight immediately turned beet red, and took a step back. “R-Rainbow Dash! W-what on Earth are you doing here?!” To say the unicorn was flustered would be an understatement. How long had Rainbow Dash been up there? How much had she seen? And how the heck would Twilight be able to explain what she was doing? What kind of plausible story could she fabricate that would innocently explain away the fact that she was wearing a soaked – not to mention very messy – diaper in the middle of her room? And visibly enjoying it, to boot?
The intruding pony shook her head and stood up. “Ow, guess that window wasn’t latched…” Rainbow Dash muttered. Her eyes widened, as she realized just what that meant. She turned to her friend, and with a sheepish grin, said, “Uh, heh heh, hi, Twilight. I can totally explain why I was spying on you, really…” The pegasus’s anxious expression and lack of follow-up were clear indications that she actually couldn’t.
Twilight nervously tried to fill in the awkward silence that descended on the room. “Oh, um, really? Because I can totally explain why I’m…” she looked around the room anxiously, and caught a glimpse of herself in the mirror, cringing at the sight. “…um, doing…this…”
“Yeah, about that,” interrupted Rainbow Dash, “That’s actually the reason I was following you. Ya see, when I realized that you were carrying a pack of diapers, I just had to find out - ”
“ – what the hay I was doing with them, I know,” Twilight finished her friend’s sentence dejectedly. There was no use trying to hide it now; everything was so blatantly obvious. Tears started filling the unicorn’s eyes, and she hung her head. “What can I say? I’m just some kind of freak that likes…dirtying diapers…”
At this Rainbow Dash raised a hoof and shook her head. “Whoa, whoa, whoa, time out here. Just because a pony likes wearing and using diapers, that doesn’t make her a freak. I mean, hey, that would make me one, too. And Rainbow Dash is not a freak.” She smirked at this.
Twilight looked up, confusion crossing her face. What? What was that supposed to mean? Was this some kind of a cruel prank? ...No, Rainbow Dash wasn’t like that at all, despite her occasional penchant for mischief. She was a good, loyal friend. Twilight searched the pegasus’s expression, looking for some hint of her intent. Come to think of it, Rainbow hadn’t negatively commented on her babyish attire (or the horrible stench permeating the room, for that matter), and judging by her current expression (which was a warm, gentle smile), the only logical conclusion was –
Twilight’s eyes widened, a startled look of realization appearing on her face. “Rainbow Dash, you – ?”
Before Twilight could finish her sentence, an urgent look appeared on Rainbow Dash’s face, and she quickly jammed a forehoof between her legs. “Yeah, yeah, great, now that you’ve figured that out, you’ve gotta let me use one of those things,” she said, pointing to the unicorn’s diaper, “I’ve been holding this, like, forever, and I think I’m about to have an accident!”
This caught the unicorn completely off-guard. “Wait, what? Rainbow - ”
“Uh, Twilight, can we please talk about this later?” the pegasus interrupted again, “I’m about to pee all over your floor here!”
This got the unicorn’s attention. “Right, later” she said with a nod. As fast as she could, she pulled one of the diapers out of the package, unfolded it, and put it onto her desperate friend.
Rainbow wasted no time in using the diaper; Twilight was still taping the garment up as the pegasus opened the floodgates. A loud hissing sound immediately became audible, and Rainbow Dash closed her eyes, groaning in relief as she let everything out full-force.
“Dash! At least wait until I’m done putting it on you!” the unicorn exclaimed, taking a step back after she finished securing the last tape.
If Rainbow Dash heard her friend, she didn’t acknowledge it. She just kept going, relishing the relief she had been waiting all night for. As she went, the front of the garment started to puff out slightly, but not very much; this caused her unicorn friend to voice some concern.
“Uh, you might want to slow down a little. If you go too fast, the diaper won’t be able to absorb fast enough, resulting in - ”
Suddenly, a yellow stream started running down the pegasus’s left leg, and her friend gasped as it started flowing onto the floor.
“Ack! Dash, stop! You’re leaking!”
“No can do, Twilight,” Rainbow responded through gritted teeth, “Can’t stop the flow now. It ain’t over ‘til it’s over.”
Twilight rolled her eyes. “Well, try changing your position, then. If you squat more, the urine should travel down into the center of the diaper, instead of out the leg holes.”
Rainbow Dash said nothing, but complied with her friend’s request. The leaking stopped immediately, and the bottom of the garment started swelling.
“When you finish, don’t stand up immediately. You need to give the diaper time to absorb everything, or else it’ll leak again,” the unicorn helpfully offered. It was strange for Twilight, to be giving her friend advice on the best way to pee in a diaper, but at the same time, it felt...special. It felt good to be able to share an experience like this with someone, especially one of the ponies she routinely hung out with. Nevertheless, it still felt weird, and Twilight couldn’t help but smirk at the silliness of it.
A minute passed, the room silent save for the tomboyish pegasus’s noisy peeing. Eventually the hissing slowed, and then stopped. After waiting a bit, Rainbow Dash opened her eyes and let out a big, contented sigh, relief evident on her face. “Oh, man did I have to go!” She stood up and turned around, surveying the sodden garment she was wearing, which was thick and squishy from back to front, causing her legs to be forced apart slightly. “Wow, that’s gotta be a new record or something.”
Twilight Sparkle stared at her friend, stunned. “You sure did have to go! Geez, Dash, how long were you holding it? You know, it’s not very healthy to –” The unicorn’s eyes widened, and she stopped herself midsentence. “Wait a minute, before anything else, you owe me an explanation.”
Rainbow Dash smirked, looking the babyish unicorn up and down. “Twilight, I think we both owe each other an explanation.” Then she frowned, and rapidly waved a hoof in front of her face. “But, uh, maybe you could change first? You’re kinda stinkin’ up the place.”
An indignant expression crossed Twilight Sparkle’s face, and she raised an eyebrow. “Oh really? Ya know, Rainbow Dash, this is my house. You’re the one who –” suddenly the unicorn caught a whiff of the ambient odor, and her eyes widened in shock. Her ears went down, and she started blushing again. “Eh heh heh, maybe you’re right,” she nervously chuckled.
“Yeah…” Dash said, scratching the back of her head. “You go do that, and I’ll just, uh, chill here or something…”
Looking at Dash’s soaked diaper again, Twilight replied, “Actually, you should get changed as well. That diaper will probably get cold and clammy after a while, and if you stay in it for too long you may even develop a rash. Besides, given how much you’ve urinated, it’s likely to leak again if you move around too much. ”
Rainbow Dash rolled her eyes. “Geez, Twilight, only you could suck all the fun out of wearing diapers.” Noticing her friend’s nonplussed expression, she quickly added, “Uh, I mean, yeah, you’re probably right.” The pegasus put on an insincere smile.
Twilight smirked and rolled her eyes, then headed for the bed, where she pulled out two more diapers. Looking over her shoulder at Dash, she cheerfully said, “Come on, I’ll show you where the bathroom is, and we can tell each other our stories while we get cleaned up.” Noticing a weirded-out expression on her friend’s face, the unicorn quickly elaborated. “We’ll be cleaning up one at a time. We can talk through the door while we’re waiting for the other to finish.”
Rainbow Dash looked much more relieved by this proposition. “Oh. Okay.”
The lavender pony rolled her eyes, and led her friend off to get cleaned up. As they walked down the hallway, Twilight mulled over what had happened that night, and she began mentally drafting out her next friendship report:
Dear Princess Celestia,
Tonight I learned that friendship can sometimes be surprising. Even if you think you know everything about one of your friends, they might show you a side you never knew they had, and you can end up bonding over an activity you thought only you enjoyed. You never know until you try!
Your faithful student,
Twilight Sparkle
