Season 6, Episode 21: "The Fusilli Jerry"

-Yeah. -Well, thank you very much.

-So did you get your new plates? -Oh, yeah, I got my new plates.

But they mixed them up.

Somebody got mine, and I got their vanity plates.

-What do they say? -"Assman."

-Assman? -Yeah, Assman, Jerry.

I'm Cosmo Kramer, the Assman.

Who would order a license plate that says Assman?