Top Definition
1. An elusive hiding place used for smuggling illegal substances into "the big house".

2. Anus
"No I don't have any weapons...oh's in my prison pocket."
by Garret_ September 17, 2008
The place on one's person (anus) where you would smuggle items in and out of prison...
my baby's mama was able to sneak me 4 packs of smokes and a connect 4 game pass the gaurds by using her ample sized prison pocket
by jmgiggity September 21, 2011
a genital orifice when used for smuggling; can be either vagina or anus on a woman , but anus only on men
just stuff this in your prison pocket right before you go through security
by ubermilf April 20, 2015
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