Beer and plastic cups, red solo's work best, and a table (larger the better).
Get together the group of players that will be playing.
Split the group of people in to two teams and have a team on each side of the table, have each person fill their cup and place it on the table.
Pick one end of the table to start and have a person from each team pick up their cup and chug, after finishing their beer, place the empty cup with the open end down and partially hanging off the table; Then the person must flip the cup to the right way up (drinking end up).
After completing this the next person on the team must repeat repeat the process until everyone on the team has done it. The first team to finish wins. The losing team usually has to chug another cup of beer.
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