Top Definition
when you quickly extend your arm inward, stretching the skin apart on your elbow, making it hard and boner-like.
Zack: dude, I reached up really fast to slap the bug off my shoulder, and everybody saw my wenis boner!

me: dang, dude was it bad

zack: it was all dirty from being outside
by the def person February 21, 2008
5 Words related to wenis boner

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