Get an empty ice tray and fill both rows with beer. Give each player a straw. When you start the clock start sipping as fast as you can from the first ice cube area to the last one. You cannot skip over any or leave any beer in the slots, it has to be all gone. If there is even a dash of beer remaining in a slot, you must do another row all over again. So even if the winner leaves 3 slots with a dash of beer in each one, and loser did it all, the winner must do 3 lines of beer while the so called loser laughs in his face.