Definition of "knee-slapper" []

• Alternative spelling of knee slapper. (noun)

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• "But the thing about satire, as with most other sorts of humor, is that it tends not to age well: That knee-slapper of a joke loses some impact after the ninth or tenth time you tell it, and this one is years past its sell-by date."
• "Attacks upon Bush as well as his family have been OK ... job him the chimp or spiritless comments about his daughters have been the genuine knee-slapper."
• "Now Pelosi says, "Democrats are in the lead on fiscal soundness"--a statement that would be a real knee-slapper if it weren't so terrifying in what it reveals of the Democratic Party's economic policy psychosis."