George

Well, you know, I shouldn't have let you into Kramer's, now you want to go into Elaine's...she entrusted me with her spare keys, how can I just let you in?

Jerry

What is the big deal?

George

Just because you have someone's spare keys, it doesn't entitle you to break into their apartment. That's the reason you took away Kramer's keys.

Jerry

First of all, you're not even supposed to have Elaine's keys. You're supposed to give 'em back to her, so she can give 'em back to me, because she has mine. So technically, those are my keys.

George

Yes, well, if you had never taken your keys back from Kramer, he never would have taken his back from you and given 'em to me, in which case I wouldn't have had to take mine back from her.