Well, its under a blanket, so if you do anything with the girl that she isn't willing, there are no witnesses, if you get my drift. And if she is a hot girl/the hottest girl you can expect to get cause you, like the rest of us, are, in the words of Telan, universally shunned, go for it.
So I definately thought this was just a normal forum game and was going to make some wisecrack about isn't that some dirty game you play with girls, but then that actually was what the thread was about. That's pretty harsh and a let down. My wisecrack is gone.
That being said, I've never actually heard of this game before, so I can't help you out with it.