Flip cup

Flip cup is a drinking game. It is very easy. Players get a (usually plasic) cup with a drink, most often, beer. They drink the cup, and then place it on the edge of the table. They then try to flip the cup, so that it lands opening down on the table. 
They game was first played in Baltimore, Mariland, in 1980, and rapidly became popular. Because players need to drink every cup beforetryaing to flip it, they get drunk very fast.