Similar to a limp biscuit or ookie cookie, a bunch of guys nut in a bitches mouth. She then snowballs the first guy that came, he snowballs the second guy, and so on down the line like a snowball rolling down a mountainside. The last guy to have came is the loser and must swallow.
Man my weekend sucked. I got really drunk at a sausagefest and was talked into a snowball mountainslide. I lost so I had to swallow eight guy's man juices.