fake it till you make it... just go up and talk if you make a fool of yourself who cares? you're obviously not gunna be hanging out with those chicks anytime soon if they're biotches.
GIRLS WILL DO ANYONE....
It's just a matter of impressing them in one way or another (I'm not talking gum in their hair or burnouts in they're lawn) or just catching their interest....
Good luck... remember 9 out of 10 times you get smacked in the face but that 10th time..... it's... Magic.
