Natasha's belly undergoes a sudden growth spurt after drinking several milkshakes at a local diner. Apparently she forgot that a pregnant Ratton, like herself, will become even more pregnant after consuming large quantities of food; and since she downed 27 milkshakes in a row (29 if she had been given the two milkshakes currently held by a mildly confused waitress), Natasha still has a ways to go before her boisterously budding womb stops growing.
Who knew ice cream-based drinks were so nutritious to unborn Ratton babies? =3