(after Jackie takes a cupcake Kelso was going to take)
Kelso: What are you doing? You knew I was gonna take that one!
Jackie: Oh well, too late.
Kelso: You know, you're always doing that. That is the reason why we broke up!
Jackie (angrily): We broke up because you were always cheating on me!
Kelso: That and the cupcake thing!