Season 9, Episode 5: "The Junk Mail"

-Hey. -Kramer, what the hell are you doing?

I know, I'm gonna switch the bucket to something else.

-Not that. -What?

You're in trouble, Kramer.

I shouldn't be talking to you. I'm telling you as a friend.

Here's how it's gonna happen.

You may be walking, maybe on a crisp autumn day just like today...

...when a mail truck will slow beside you, the door will open.