Fill up a paintball hopper with grapes (may require a modified barrel) and have a blast while trying to catch your opponents' shots in your mouth. Grapes aren't as hard as paintballs so they won't hurt as much, and you can use lower pressure for higher wimp factor.
Player's Note: The game is played the same way as regular paintball, but you get a credit to your hit allowance for each shot caught in the mouth.-- 21 Quest, Oct 03 2006 The Three Stooges did this, but without a gun. Episode- Pardon My Scotch-- xandram, Oct 03 2006 random, halfbakery