Typhlosion but they find themselves soon to be immobile once they realize that taking too many emeras that increase belly capacity meant they would nearly weigh as that of a Snorlax

https://www.furaffinity.net/view/37084509/

Scolipede but it's being rolled through food like a Katamari

Anyone from the porygon family bloating up from downloading data

how about all three?
https://www.furaffinity.net/view/37126869/

Reshiram getting rounded out with water, forgetting that it'll all turn into steam~

https://www.furaffinity.net/view/38158980/

gOOD

A cocky Zoroark takes a bet that he can eat all the food in every house he robs and still get out... Leading to him not even being able to attempt to escape the third house, as it just so happens to be owned by a gluttonous snorlax with plenty of food, and he has become too heavy to climb on the table to get to the window~ (if you're doing more than 1, of course)

part 1: https://www.furaffinity.net/view/37528594/
;3

Nice~

A cocky Sylveon that bosses other Eeveelutions around, ordering them to feed the snooty Sylveon, but the others decide to take revenge and stuff the Sylveon to immobility~ (Not sure if you can draw ferals or if this will be a sequence, but if you can, go for it!)