Here are the instructions from Wikipedia to moose. Just ignore my first (intoxicated) post about the rules. :)
The players gather around the table and decide as to which side of the ice cube tray is the "give" side and which side is the "take" side. Usually the right side is the give side and the left side is the take side. In some variations, a cup of whatever alcohol that is being used is placed in the center for the ice cube tray to be placed against and rotate around. After this is decided and set up, players take turns trying to bounce the quarter into the ice cube tray.
When the quarter lands in the ice cube tray and it lands on the "give" side, then the player who bounced the quarter into the tray can distribute as many sips to any combination of other players as there are squares that were passed over by the quarter. When the quarter lands in the ice cube tray and it lands on the "take" side, then the player who bounced the quarter into the tray has to take as many sips as there are squares that were passed over by the quarter.
If the quarter lands in the furthest row (or last two squares on either the "give" or "take" side) every player has to put their hands to their heads, mimicking a moose's antlers, and yell "MOOSE." The last person to do so has to take the "main drink" (also known as moose cup). (Other variations include the person has to fill their drink and then empty it).
However, if a player yells "Moose!" prematurely when no one has made it in the cup, he or she must drink the bowl. If the quarter lands in the bowl on a players turn he or she must drink the bowl and lose a turn.
If the quarter lands on the ice cube tray but does not fall into a square, this is a social and everyone must take a drink. If the quarter ends up in any person's drink, the player that bounced the quarter has to finish that person's drink.
Sometimes, if there is a tie when players yell "MOOSE!", then players put their thumb onto the table. The last one to do so, drinks the main drink or moose cup.
Our variations: if you bounce the quarter into the cup at the end of the tray then you get to chose who drinks what's in that cup. And if the quarter lands on the tray but not in a slot then you make a rule. You can change the rules to your liking.