The game of rock paper and scissors but was given this cool name on Castle because they are amazing.

(Chinese/Japanese/?) name for Rock-Paper-Scissors

The act of two males kicking each other in the balls until one of them gives up.

A game (usually to solve a dispute) where two men kick eachother in the balls as hard as they can. The first person to give up loses.

Rocks-paper-scissors.

Those without an social interaction other then a TV believe it is the process of kicking someone in the nuts, due to some episodes of South Park, in which Cartman tricks people into getting kicked in the nuts. The people who believe this act embodies the phrase are not only sadly mistaken, but are naive and childish to have believed a cartoon above life experience.

A contest played for supreme test of wills in which two men must receive repeated kicks in their nuts.
The contest must be called out before hand whether it is Standard Ro Sham Bo or Professional Ro Sham Bo.

A game of kicking your opponents balls to settle a dispute between two men.

Same concept as Standard Ro Sham Bo, only with anti-fraud laws/rules set in place.
1.) Both opponents must wear speedos, neither opponent is allowed to perform the actual kicks.
2.) A referee is called out who then in turn nominates kickers or one kicker. Those Kicker/Kickers must be of equal bias towards the opponents.
3.) No shoes allowed on kickers
4.) No girlie kicks
5.) What happens in Ro Sham Bo, stays in Ro Sham Bo

New and improved Ro Sham Bo. It is a professional game designed to where the games can not be "set up" or involve cheating or degrees of unfairness.
The main reason pertains to the degree of unfairness. In Standard RSB two males kick each other in the nuts until there is only one left standing and he is the winner.
However, if one man has stronger legs than the other man, the man with stronger legs is given the advantage. Up to date this method is largely becoming illegalized and has been upgraded for the new and improved "Professional Ro Sham Bo".
(Although "Standard RSB may still sometimes be played for fun.)
In Professional RSB there is normally money or spoils at stake. Therefore Professional RSB is often mandated. Also any opponent may at anytime call out for Professional RSB and if so, must be enacted.
Rule #1) In Professional RSB also known (as Third Party Ro Sham Bo), one or more unbiased kickers must be nominated. If a biased kicker is nominated towards one of the opponents than yet another kicker must be added of equal bias to the other opponent.
The kicker must kick each opponent than step back and let the other kicker proceed for their round. And on and on in this fashion.
Rule#2) BOTH opponents must wear speedos. This is to ensure to the video taped audience/judges/spectators that there is no wearing of "cups".
Rule#3) An unbiased referee must be present to nominate kicker/kickers who must be of equal bias towards both opponents. The ref will call out the nature of the spoils, (normally money from the spectators but not always)
Rule#4) GIRLIE KICKS ARE STRICTLY PROHIBITED!