A winning participant is blessed with the gift of hilarious flatulence and clean underwear, while a loser has to deal with the unpleasantness of a shart.
-Buy a box of condoms
-Take out one condom
-Take a pin and puncture the condom while in the wrapper
-Put the punctured condom back into the box
-Let people take the condoms freely
Much like russian roulette, this will end up with your life ending.
Person 2: "Yeah, she was at a party a few weeks ago, we played mexican roulette".
Person 1: "You're going to hell".
Person 2: "I know".