Quote from Jerry in The Finale
D.A. Hoyt: State your name. Bookman: Bookman, Joe Bookman. D.A. Hoyt: And what's your occupation? Bookman: I'm a library cop. D.A. Hoyt: What does a library cop do? Bookman: We chase down library delinquents. D.A. Hoyt: Anyone in this room ever delinquent? Bookman: Yeah, he was. Right over there. Seinfeld. D.A. Hoyt: How long was his book overdue? Bookman: 25 years. We don't call them delinquent after that long. D.A. Hoyt: What do you call them? Bookman: Criminals.