Top Definition
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
#dennis #pork #italian #slang #everything #know it all #snide
by Loreninha219 January 22, 2009
7 Words related to Dennis DeMaio
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