"The Fusilli Jerry" Season 6, Episode 20

Kramer gets a new license plate, but the DMV gives him someone else's vanity plate: ASSMAN. George's mom gets plastic surgery and then thinks Kramer is hitting on her. Elaine informs Jerry that Puddy is using his "move" in bed. Jerry confronts Puddy and insists he not use the move anymore. George tries to use the move, but messes it up.