The Letter Season 3, Episode 21

Kramer

You sure you don't want me to take my clothes off? (beat) I'll do it!

Nina

No, that's the last thing in the world I want you to do.

Kramer

Well, why don't you take your clothes off?

Nina

I don't know... I don't think Jerry would like that.

Kramer

(debonair smile) Well, it'd be our little secret.