Kramer sees his mother for the first time in years, where his first name is revealed. George tries to find out if his girlfriend is bulimic. Jerry dates a woman who doesn't laugh and wants to switch with her roommate, who laughs at everything he says. Elaine lends Mr. Pitt's tennis racket to a woman who's offering her a new job, but when she gets injured, Elaine tries to get the racket back.

!!Tropes:
* AllWomenArePrudes: Subverted and inverted, actually, though the success of George's plan was entirely predicated on it being true. It never occurs to him or Jerry that Sandy might actually be ''interested'' in the Ménage à trois; in fact the plan calls for her to be ''so'' disgusted by the very idea that she immediately dumps him and ejects him from her apartment, never wanting to see him again. (The idea that Sandy might simply politely decline, without that ending the relationship entirely, doesn't into enter the equation.) We eventually learn that it's Jerry and George specifically who might be turned off by a Ménage à trois, because despite it being one of the most stereotypically common male fantasies, Jerry declines to go through with it, and George admits he wouldn't either.
* BatmanGambit: Jerry attempts one by asking Sandy to do a Ménage à trois with Laura in hopes that will disgust Sandy, causing her to break up with him and Laura to be attracted to Jerry. Unfortunately, it fails as Sandy likes the idea of a threesome.
* BigEater: George's girlfriend Nina is a model with a nice slim figure that happens to poke down a lot of her dinner.
* CassandraTruth: Nina goes to the bathroom to "freshen up" after dinner, which George thinks is a cover to throw up so he follows her and hears retching noises. Turns out she is freshening up while someone else had food poisoning.
* GivenNameReveal: The first time we learn Kramer's first name... it's Cosmo.
* SkewedPriorities: George is concerned that his girlfriend might be bulimic, but only because she'd be wasting his money by throwing up all the food he just paid for, not out of any actual concern for her health.
* SpringtimeForHitler: Jerry suggests a threeway with his girlfriend Sandy and her roommate Laura, with the intention of pissing her off enough to break up so he can date her roommate. One problem: "She's ''into it.'' And, not only that, she just called me, she told me she spoke with the roommate, and the roommate's into the menage, too."
* TheStoic: Jerry's girlfriend Sandy does not laugh at all, just replying to jokes with a flat, emotionless "That's funny". This is in contrast to her roommate, Laura, who does laugh at his jokes.
* ThreeWaySex: On George's suggestion, Jerry offers a Ménage à trois with Laura and Sandy, not because he's into it, but because he hopes to disgust Sandy and get Laura with the prospect of one. It fails miserably.
* WeightWoe: George suspects Nina is bulimic, when she goes to the bathroom to "freshen up" after dinner. Subverted when he hears a gagging noise and barges into the bathroom, to see Nina really freshening up and the gagging is a sick woman in the stall.