Mother: [to Kramer] Boy, I don't know about your friend, Jerry. He says some pretty stupid things sometimes.
Kramer: Oh, congratulations.
Mother: What for?
Kramer: Well, you're pregnant.
Mother: What?
Kramer: You're not pregnant?
Mother: No, I'm not pregnant.
Kramer: Are you sure you're not pregnant?
Mother: Yes, I'm sure!
Kramer: That's weird.