The Strongbox Season 9, Episode 14

Jerry

(putting on his coat to go downstairs, he finds the key in his coat pocket) I believe this belongs to you.

Kramer

Heyyyy! (bangs the table in frustration and grabs the key)

Jerry

(opens the door for George) Where did you get that?

George

(puzzled) I bought it. (enters lobby)

Jerry

(barring the way) I'm sorry. I-I don't know you.