So Tom is having some a can of "NRG Soda" that he bought from the vending machine, the same soda that he drink for making his feet grown and forcing to tap dance recently. Tom drinks a whole can of soda with a taste of green apple flavor.
As Tom finishing his drink and he walk headed to the nearby trash bin to throw it out but before he threw the can, Tom stopped walking then he looked down on his feet are flapping up and down on its own and he realize that his feet are having cursed again from the soda that he drank a while ago. Just like last time, they're starting to glow in green colored aura around his feet and growing bigger and bigger proportions.
Then next is his feet have mind of its own and talking at Tom and he panicked as he think his feet starts tap dancing again. But this is different, his sentient feet are forcing to endless wiggling on his huge toes instead on tap dancing. He felt embarrased as he didn't move his feet and Tom realize that every "NRG Soda" of any flavor and any cursed variations, recently he did drink a blueberry flavor which making him an endless tap dance and extra huge size and as of now he did drink a green apple flavor which making him an endless toes wiggling.
As for Tom The Meowth tell his sentient feet to stop wiggling his toes but his feet ignoring him and they act them as a big boss that what they really want.