Top Definition
bopro is an abbreviation for "Boner Protection," which is what is needed when one fears getting hard in a public place. Bopro suppresses or conceals any type of wood that might come one's way.
Examples of good bopro are compression shorts, heavy jeans, and wearing one's backpack on one's front.

Dude, I totally got a random boner is English yesterday. Good thing my denim carpenter pants serve as sufficient bopro.
by Albert Brady March 27, 2009

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