The Row Sham Bow is the act of two people kicking each other in the balls until one of them is left crying on the ground, the person standing is the winner (usually the winner is the person that goes first)
Person 1: Hey *insert name* I'll Row Sham Bow you for the last piece of pizza, SHOTGUN GOING FIRST!
Person 2: you're on
.... Two seconds later person 2 is lying half dead on the floor clutching his groin crying...
After person 1 has finished the pizza he calls an ambulance