This rule either allows players to blow the ball out:
◊ Once the ball enters the beer pong cup
◊ Before the ball hits the liquid
If this rule is in play, the player can blow on the ball if it is spinning around the cup. By blowing on the cup the air can hit the liquid and blow the beer pong ball out of the cup. If blowing is allowed then this is a legal move in the beer pong game.
Variations:
"Only Bitches Blow" - This means that only girls can blow the ball out, and guys cannot. Accepted pretty much everywhere. Works in conjunction with the
Guys Fingering Rule.