Season 7, Episode 18: "The Friars Club"

I was just in the bathroom.

Okay, Jerry, please, please. I'm really busy here.

No, no. I was just in the bathroom with Bob.

No, I kind of tried to test his hearing.

Get out! What did you do?

I snuck up behind him at the urinal

and tried to see if he could hear me.

Well...he flinched...sort of.