Top definition
When one's penis curves abruptly during arousle, either to the left or right forming a ninty degree angle.
Dude, I went to geometry class today. the teacher showed us his Boomerang Bone!
by Piginablanket July 06, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug