When a man pulls back his erect penis and lets it go to smack someone in the face, the same way one would pull back the branch of a tree and let it swing back into place.
I tree branched that bitch last night.
by BlingBling June 01, 2005
Internet slang for a penis that bends to the right which has been hideously defaced with a magic marker and has had a picture taken of it which has been sent to the object of the owners desire.
lolz roffle Magus' Treebranch
by Sottle September 16, 2003