Top Definition
1. A title given to a guy who's attitude exudes self confidence, an alpha male type presence, or an "I'm better than you but I don't feel the need to point it out" type aura.

This type of behavior is most common in short males when they are around their significant other.
Male 1: hey dude look at Matt over there.
Male 2: What do you mean?
Male 1: He's sitting over there like Mr. Big Dick with his arm over his girlfriend like that.
Male 2: Oh yea, but you know he's short and short guys need to like assert their dominance and whatnot...
by Slyfer070 August 08, 2009
5 Words related to Mr. Big Dick

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