Season 3, Episode 21: "The Letter"

I owe you some money, don't I?

-Well, I really love that piece. -Me too. Boy, oh, boy, oh, boy.

You know, in fact, I've been thinking about it, and...

...you know, I feel like I'm stealing from you.

Five hundred dollars! This is gonna be worth thousands soon.

You know what? On second thought, I can't even accept this.

No, no, no. George, a deal's a deal. I want you to have it.

This could be in a museum someday. It's not safe with me.