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Roe sham boe is what scissor paper rock is known as in japan. It also refers to a game where the two participants kick each other in the balls. The winner is the person who makes the other fall to the ground writhing in pain.

An obvious advantage in this person is to either go first or be female.
I really wanted the watch so i had a game of roe sham boe with him. I won as i am female
by Aberrant_Angel May 20, 2006
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