Cum roulette is when you and a couple friends play Russian roulette with cum first to cum looses
And then bill Gates comes out of no where and anal fuck all of you until you bleed
Take as many friends as you want and grab a box of tissues, take 3 tissues each. After taking the tissues go into a different room and blow your nose into two of the tissues, ejaculate into the last tissue.
Screw up the tissues and come back into the room, players take it in turn to eat a tissue, the loser is the one that eats the most cum filled tissues
The winner (if there is one) is the one that eats the most snot but least cum