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when you get a boner from seeing someone's sideboob
Duuuude I totally just got a sideboner from seeing Emily's sideboob.
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by sponge_boob February 20, 2017
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When you flip the side pockets of your pants inside-out creating a penis looking shape which is referred to a "side boner".
Speaker 1: "Hey, why do you have a side boner?"
Speaker 2: "Oh, I must've gotten it when I was searching through my pockets looking for my keys."
by Vaginal Destroyer December 07, 2013
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