A penius that is small and skinny.
Hey guys skinny penius here.
by NXTFighter November 16, 2017
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When one comes up with a genius penis joke.
Mark told an absolute penius joke last night.
by The_bearded_dad April 6, 2017
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A mixture of penis and genius, describes a guy who’s pretty genius with his penis, a guy who can do tricks with his dick, a man who rocks with his cock, and a bro who can’t go wrong with his dong.
“Yo Mark, did you hear how Andy banged twenty women in under ten minutes? Yeah, that guy’s a penius
by Jackniffo100 March 31, 2019
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I have the kind of penius who knows better than I do, when the woman is just too fat or skanky.
by joereed December 1, 2013
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Someone who is well versed in all things penis-related
"That guy Whiskey, he know's EVERYTHING about penises"

"I know right, he's such a penius!"
by Schrodingers Douchebag September 29, 2021
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