If you're ever with a big group of people looking for a good drinking game, do as we did at Beth's wedding.
Step 1: Cover a table top in blank sheets of paper.
Step 2: Tape them down
Step 3: Blow all over to test the integrity of the table, and tape down anything you missed
Step 4: Get a bunch of people to go to work on filling those sheets up with ridiculous dares, group activities, "drink if you...", and other ideas (such as, "cast a harry potter spell," "married people drink," "grab the ass of the player to your right," "truth or dare," etc.).
Step 5: Congregate around the table
Step 6: Spin or bounce a quarter to take your turn. Wherever it lands, do that.
This game is called The Table. It's really fun.