The unique rules that vary from table to table are what makes Beer Pong really interesting.
-If a player bounces the ball into a cup, the opponents must each drink a cup. The opponents can swat the ball out in defense though.
Rebuttal/Retribution- When one team gets all of their opponents cups, the opponents get a chance to rebut. Each player hits until he/she misses. If they successfully hit the remaining cups, both teams go into overtime. Overtime is usually played with 3 cups and no bounces.
-Game Cup - If a player sinks a ball into the opponent's drinking cup (the cup he is currently holding and drinking), the game is over. No retribution.