Season 7, Episode 10: "The Gum"

What's the problem here?

This hot dog's been here since the silent era.

-You'd have to be insane to eat it. -No, no, this man is not insane.

There's nothing wrong with it or you.

-Kramer-- -No, no, I'll show you.

-One hot dog, please. -Okay.

Doesn't that smell good, huh?

Here we go. Yeah.