Season 5, Episode 18: "The Raincoats"

Oh, hey, guess what. Morty Seinfeld and I

are going into business together selling raincoats.

Hey, that's swell.

We worked it all out over dinner last night.

You...had dinner with the Seinfelds?

Yeah, last night.

Was this something you had planned for a while?

No, it was spur of the moment.