sperm-roulette 

When 8-12 guys cum into a mug. You stir the cum with a large kitchen spoon into a thick milky consistency. Then find a funnel-like object and insert the smaller end into a passed out, drunk female's genitalia. Slowly pour the blended substance into the large end of the funnel and place your bets on the poor bastard that gets her preggo. That is how you sperm-roulette a girl.

Dude remember the party last weekend when we had a great game of sperm-roulette!?

sperm-roulette by LittleOldMan_69 November 7, 2013

sperm donor roulette 

When a woman can't make up her mind on what sperm donor to use, or if she likes to live dangerously. She uses multiple donors at the same time and attempts to have a child.

Guy1- "Did you hear about Jenny? She can't make up her mind."

Guy2- "She should just play sperm donor roulette."

sperm donor roulette by Upsidedownfishing October 11, 2014