Seinfeld: Season 6, Episode 11

6 - 11: The Switch

Elaine loans Mr. Pitt's expensive tennis racket to an executive from Doubleday who hints there may be a job opening for Elaine soon. Jerry's girlfriend never smiles or laughs at his jokes but her roommate laughs at everything he says so he contemplates the switch. George's girlfriend, a model, eats a lot but never puts on weight.