Ass-Blade

A device commonly used in prison for the prevention of anal rape typically constructed of broken lunch trays fastend to the end of a writing or eating utensils that is then inserted into the anal cavity with the sharp end pointed directly out of the canal.

"Yo, you got dat ass-blade?" "I'll trade you ten cigs for dat ass-blade." "Jimmy, Big Dom come see you last? Yeah, he on it every night by now. Shit, you need to get dat ass-blade."