Dr Ray Stantz: You know, it just occurred to me that we really haven't had a successful test of this equipment.
Dr. Egon Spengler: I blame myself.
Dr. Peter Venkman: So do I.
Dr Ray Stantz: Well, no sense in worrying about it now.
Dr. Peter Venkman: Why worry? Each one of us is carrying an unlicensed nuclear accelerator on his back.
Man at Elevator: What are you supposed to be, some kind of a cosmonaut?
Dr. Peter Venkman: No, we're exterminators. Someone saw a cockroach up on twelve.
Man at Elevator: That's gotta be some cockroach.
Dr. Peter Venkman: Bite your head off, man.