Turns into a redhead

Norma, Joan and Bonnie, three young blonds, are blocked on an uninhabited island and one finds a magic lamp. They rub it and a genie pops out and gives them each a wish. The first blonde says, "I wish I was smarter so I could get off of this island." Then Norma turns into a redhead and swims off the island. Joan sees what happens and says "I wish I was most smarter so that I can get off this island!" Joan then turns into a brunette, makes a raft from trees and sails off. Finally, the third blonde says "I wish I was smartest so I can get off this
island." Bonnie then suddenly turns into a man and walks across the bridge.