Prison, penal institution, penitentiary, reformatory, slammer
Poor old Tyrone, got busted again for mugging little old ladies. He be headed for Nigger University.
First framed in the 60's, nigger university is another word for prison. It was assumed that with the prison system becoming geared more toward rehabilitation and less toward punishment that blacks that went to prison learned more behind bars than at any of the black colleges at the time.
Where's Tyrone? He went to Nigger University again cuz he be rapin and stealin.