Three blondes are walking down the beach. They see something and pick it up and rub it. A genie comes out. He says, you each have one wish. The 1st one says I want to be 20 times smarter. She becomes a brunette. The second one says I want to be smarter but not that much smarter. Make me 10 times smarter. She turns into a redhead. The third one says, I don't want to be any more smarter. Make me 100 times dumber.

She turns into a man.