Three blondes were stuck…

Three blondes were stuck on an island. then, a magic fairy appeared and gave them each a wish. The first one asked to be really smart, so the fairy turned her into a red head and she swam off the island. The second blonde asked to be even smarter, so the fairy turned her into a brunette and she built a boat and sailed off the island. The third blonde asked to be smartest of them all, so the fairy turned her into a man and he walked across the bridge.