Details: This poster says at the bottom Beer Pong Party . It shows several ping pong balls in varoius party scenes. There are colored lights coming from the top, and some balls are sitting in red cups or splashing into them. Others are dancing on the floor, and one is doing a keg stand.
Beer Pong (also known as Beirut) is a drinking game in which players throw a ping-pong ball across a table with the intent of landing the ball in a cup of beer on the other end. The game typically consists of two two-player teams and multiple cups set up on each side set up in triangle formation. There are no official rules, so rules may vary widely, though usually there are six or ten plastic cups arranged in a triangle on each side. The goal of the game is to eliminate the other teams' cups before one's own cups are eliminated. When a ball lands in a cup, which are generally 1/4 to 1/3 full, that cup is eliminated and the defending team must consume all of the beer inside that cup.