Narc. 21 Jump Street originally ran on the Fox network from 1987-1990. 21 Jump Street is the headquarters for a squad of police officers who specialize in investigations relating to young people.
Instead of saying : "That fucker Ronnie, he is such a narc. He told the cops I was smoking pot in the bathroom.", say : "That fucker Ronnie is so the guy from 21 Jump St."