Don't know if anyone has ever heard of this but my friends and I have lately been playing punishment poker, which essentially is a holdem tourney with punishments instead of money. We wrote out a list of punishments and usually split into 2 games of 5 people, and the first 3 out on each have to do one of the punishments, first person out chooses last... its pretty interesting. Some of the punishments we've done are:
-Drink an 8 oz concoction of whatever can be found in the nearest kitchen
-Go to your local batting cages and get hit with a ball at the fastest speed
-Wet yourself in a public place (My punishment the other day)
-Eat a Taco Bell Grande Meal in 30 minutes, and if you fail, you must complete a new punishment
-Run naked around the block
-Each member gets to take a point blank shot with a rubber band at your bare nipple
You can think of other punishments im sure but heres a few ideas..try it out, its definitely interesting.