Butt Prison

Magnum condom-shaped meat locker in your nethers for storing copious amounts of nacho-induced, noxious hot ass gas. See also: Prison Wallet, Gas Chamber, Fart Factory.

Bill: Dude, what is that smell?
Bill’s Friend: Sorry man. Just couldn’t hold that fart in my butt prison any longer.

Prison Butt

Ones asshole that is used to store miscellaneous items

Cole used his prison butt to deliver his mother's refrigerator to her new house