Roll Pregnancy

When someone is so incredibly fat that their body rolls are big enough to contain a person. This is generally found in animals and not humans for example; a pug, or a chihuahua that has been largely overfed may have large enough body rolls to contain another one of their breed.

John: Phillippe wtf are you doing in my fat?

Phillippe: Shh I'm hiding from the mall cops, now let me just inseminate your fat ass body rolls and make you roll pregnant for awhile

John: Wow would've never guessed I'd go through Roll Pregnancy