Jerry: "The ocean called, they're running out of shrimp"?
George: Yeah, yeah, yeah. But, then I said to him, "oh yeah? Well, the jerk store called and they're running out of you."
Jerry: Really? That's great, you said that to him?
George: Well, actually I, I thought it up on the way over here.
Jerry: Oh, that's not quite the same.
Jerry: She had man hands.
Elaine: Man hands?
Jerry: The hands of a man. It's like a creature out of Greek mythology. I mean, she was like part woman, part horrible beast.
Elaine: Well, would you prefer it if she had no hands at all?
Jerry: Would she have hooks?
Elaine: Do uh, do hooks make it more attractive, Jerry?
Jerry: Kinda cool looking.
Chosen answer: George does mention his brother in the episode "The Parking Space". They actually really never mention anything that contradicts the fact he had a brother though, it just isn't mentioned.