2 or More
For this you will need a pint glass and a shot glass. All players sit around the table and fill the pint glass with beer. Then place the empty shot glass on top of the pint glass so it’s floating.
Each person takes a turn pouring a certain amount of spirit into the shot glass. This continues until the shot glass sinks to the bottom of the glass. The player that poured last and caused the glass to sink has to drink the pint of beer and the spirit of choice in one go.