Top definition
A person who claims to know everything about everything, until someone else calls their bluff and makes that person look like a fool. Basically, a know-it-all with ridiculous assumptions and little-to-no proof.
Guy 1: Did you know that this new game console was coming out, during the Summer time?

Guy 2: Stop right there, you stupid know man! I just found out from the creators, they said they plan to release said console sometime during the Fall.
by ThatGuy2969 November 23, 2013
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