Kramer: Hmm, I'm gonna turn in.
Jerry: Turn in?
Kramer: Yeah, I had a tough day.
Jerry: It's only nine o'clock.
Kramer: Well, you know, don't argue with the body, Jerry. That's an argument you can't win.
Jerry: I can't go to sleep at nine o'clock.
Kramer: Well, you can go to your room and read.
Jerry: Hey, look, you know, you're the one who's locked out. I'm letting you stay here. You're wearing my bathrobe. You should adapt to me.
Kramer: But I'm tired.