The Doorman Season 6, Episode 18

Kramer

Oh, you didn't notice? It has a pee-stain.

Frank

(disbelief) You had me sleeping on a pee-stained couch?

George

(light) No. No, no, no. The cushion was turned over.

Frank

(anger) But, the very idea. you had me lying in urine!!

George

Ah! There's mom, there's mom.