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2.
rectum. Used in smuggling contraband into a facility or moving contraband within secure areas of a facility. Also simply as "wallet"
C/O: When Hoskins comes in from the work detail, take him to medical for a cavity search. I hear he's packing dope in his prison wallet
by LT McGunn June 27, 2011
 
1.
The anal cavity of an inmate, so named for its ability to smuggle valuables into a prision or stash them for safe keeping. Due to "recreational activity" prisoners often leave with a larger prison wallets than when they arrive.
Prison life bound to be dull, but due to years of fisting the convict managed to bring 3 kilos of smack and a boombox in his prison wallet.
by Cuntoleezza Rice February 01, 2007
 
3.
Using the anus as a wallet in prison to sneak in assorted goods.
Hey man I snuck some coke in for us in my prison wallet.
by Tommy Buns 654 May 22, 2013
 
4.
where prisoners gang members keep things they want to keep safe IE up there butt
i keep my money in my prison wallet. i got to get it out of my prison wallet
by rudedog April 20, 2009