Bonerbrain

One who is of little intelligence and/or someone who acts in an unpleasant manner, a derogatory term as to compare someone to a penis inside of a brain.
I was building a giant horse dick in Minecraft and he blew it up with TNT, what a Bonerbrain!
by Duo2Cuo March 31, 2011
mugGet the Bonerbrainmug.

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