A guy walks into a store to looking to buy a brain. The first brain he sees is a brain of an asian and the price tag says $300. He thought, "well, thats not so bad...". Then he sees a brain of a white person and the price tag also says $300. And he thought, "ok, ok..."
Then he sees the brain of a black person and the price tag says $1000!
So the guy goes up to the store clerk and asks why the black brain cost so much while the other 2 cost only $300 and the store clerk said, "That's because it's never been USED!"