Top Definition
pe·nit·wit (pee nít wìt)


man who thinks with his dick: a person who is at the mercy of their sexual urges, or generally male and stupid. (insult).

opposite of vagenius

Early 21st Century. From English, combination of "penis" and "nitwit".
What is that vagenius doing hanging out with a penitwit like that?
by Will™ May 05, 2005
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