The shot glasses are filled to the line. The players take the glasses and place them on their forehead. When DROP is called, they put their glasses on the table as fast as they can without spilling any of the drink on the table. Whoever spills any, must drink the shot. If any falls on the players hand but not on the table it is ok. If the glass breaks or is droppe, that player must drink two. Play until the bottle or your sight is no more.