Make a joke!

"Hi, uh," you start to make some light conversation with the sorority girl. But, well, you can't help but maintain the image of the messed up girl with the dark hair, who is still lying on the ground a few feet away from you.

So, like is natural, you make a joke about what you just saw.

"So, uh, your friend is 'smoking', but you're way hotter."

It goes over like a fart in church.

"She's NOT my friend." The sorority girl you're going after thinks your joke is lame, that you're lame, and that the fact that one of her sisters is lying on the ground in the middle of a social function, is lame. "And WHO are you?"