The Bob Newhart Show
Howard has a brother, Gordon the game Warden. Emily finds the alliteration so funny, she invents another brother for Howard named Norman.
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Bob: Warden Gordon Bordon?
Emily: No... his other brother. Norman.
Bob: What does he do?
Emily: He's a doorman. At the Tabernacle in Salt Lake City.
Bob: Don't tell me he's a Mormon.
Emily: That's right. Norman Borden the Mormon Doorman.
Bob: How long did it take you to come up with that?
Emily: All day.