What you need:
Peppermint Schnapps (or any clear liquor)
Shot glasses
4+ people

How to play:
Everyone stands around a table. Shot glasses are placed in front of all but one player. Each of the shot glasses is filled with water except for one; the remaining shot glass is filled with Peppermint Schnapps of any other clear liquor. The person without the shot glass is the “odd man out” and must turn around or leave the room. While that person isn’t looking, the remaining players mix up their shot glasses. They then call the odd man out back into the room to watch as they all take their shots. He/she then guesses who took the shot of liquor. If the odd man out is correct, everyone takes a shot of liquor and a new one is chosen. If he/she chooses incorrectly, he/she takes a shot of liquor and the game starts over. The odd man out keeps the job until he/she guesses correctly.