Season 4, Episode 3: "The Pitch The Ticket"

I'm giving him my motorcycle helmet. He's giving me his radar detector.

-I didn't know you have a motorcycle. -Well, my girlfriend had one.

You have a girlfriend?

I had a girlfriend.

And she was pretty wild.

-I don't remember you with a girl. -Nevertheless.

This is a pretty bad deal for Kramer.

A radar detector's worth much more than that helmet. You're cheating him.