This is “big people” vocabulary for “Rock, Paper, Scissors”.
When you used to bicker incessantly with your siblings or friends, didn’t your parents tell you to “Grow Up”. Well, apparently, that just isn’t enough. These two lawyers in this article apparently bickered so much over anything and everything that the judge just made them play Rock, Paper, Scissors to settle this last dispute.
Scope the article here “Judge orders lawyers to play game.”