2 or More
All players sit around a table and have two cups and a spoon each (tea spoons will get you drunk). One cup is full with your drink of choice, and the other is empty.
Each player has 1 minute to transfer as much from their drink into the empty cup as they can. Only the spoon can be used, and the cups cannot leave the table. The drink that you have left in your cup at the end of the 1 minute you must finish.
Whoever transfers the least drink into the empty cup, must do a shot.