FAST AND FUN GAME FOR PARTY'S AND FRIENDS. Gather your friends into two equal teams. Have a set of plastic cups all of the same type. This is crucial!

One team on one side of 'sqaure edged' table/bench, other team on the other side.
Have all your friends prepare a 'skullable' drink of even proportions and have them sit it infront of them on the table.

From one side of the table to the other, the 1st player on each team skulls there drink then places their empty cup on the rim of the table sitting a little over the edge. He then needs to place a finger under the cup and flip it so that the rim of the cup lands facing down on the table. If he fails at first (USUAL for beginners) he then has to attempt to Flip the cup again. Once he has successfully flipped the cup, the next player on the team can skull their drink and flip their cup... It's a race to the end of the table.

To make things fair, have the table rotate at the end of each/couple rounds. The table will need to be wiped clean often, especially if someone doesn't properly finish their skull.