A magician was at a carnival bragging about how he could hold his breath under water for 6 minutes. A boy walked up and told him, ''I can stay under water for 10 minutes! But if I can't, I'll pay you $100, but if I do, you have to pay me $100.'' The magician ended up having to give the boy $100. How did the boy get the money?
He got himself a glass of water and held it over his head for 10 minutes.