Dick-hole Butt-shim 

A small slab of wood that would normally go inside of a butthole for easy defecation inside of prison. But is instead being inserted into the dick hole for torture and or pleasure. Commonly used together with the prison poops

The two worst things about prison are Prison poops, and dick-hole butt-shims.

Dick-hole Butt-shim by dontusemyrealname December 2, 2010