Con College 

A school for Convicts. In other words: jail, clink, slammer, etc.

A term made popular by the character Jim Leahy on Trailer Park Boys.

Leahy: "Have fun in Con College, Ricky!"

Ricky: "F*ck you, Leahy."

Con College by Time4SumAksion November 30, 2004

Con College Cadet 

A person who is currently serving jail time.

Paul robbed a liquor store and went to prison , he became a con college cadet.

Con College Cadet by Deviant Shade July 22, 2021