Take a Breather
Rules:
Each team has 4 cups to flip total (2 per player). Players must do flip cup using only their mouths - no hands allowed. Alternate players each cup. First team to successfully flip all their cups wins.
Supplies:
Beer
8 cups
Advice:
Biting the rim of the cup and flipping it is pretty quick, but sometimes the most reliable way is just vaccuuming the side of the cup with your suck hole.