There was a blonde, a brunette, and a red-head stuck on a deserted island. They were searching for food one day when they found a genie lamp. They each rubbed it and a genie popped up. He said, “Since you all found my lamp, I will give you a wish each.”
The brunette said, “I wish I was 10% smarter so I can get off this island.” She swam off the island. The red-head, seeing what the blonde did, said, “I wish I was 25% smarter to get off this island.” She built a raft out of leaves and branches.
The blonde, seeing what they did, said, “I wish I was 50% smarter to get off this island.” The blonde turned into a man and walked over the bridge.