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an Italian American slang for somebody who knows everything.
Molly: Did you know that pork is the world's most widely-eaten meat? Bet you didn't! I'm so smart.

Buster: Stop being such a Dennis DeMaio
by Loreninha219 January 22, 2009
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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