Flip cup is a relay race with beer.
Form two teams of three or more and line up on opposite sides of
a table that can get dirty. Everyone fills up their cup, it must
be plastic cups, half way (or however much the group decides
on).
The first two people start and chug their cup of beer as fast as
they can. Once they finish they must set the edge of the cup on
the edge of the table so that only a small portion of the bottom
of the cup is hanging over the edge of the table. Then they must
flip the cup over, using 1 finger, half a revolution. In other
words, the cup must land upside down. Whenever the cup lands
upside down, then the next person may go. You do this until the
last person in line is up, they must chug twice to start the
second leg of the race.
If you chose to make the race longer than two legs then it is
advisable to have your heavy drinkers on the ends. The first
team to complete the set amount of legs wins.
One key point to the game is the cup must be empty before you
turn it over to flip the cup. Otherwise the table, yourself, and
others around you will get beer on them. Also be sure to have
plenty of beer available at hand because you go through a 12
pack in no time playing this game.