I am giving away hippos and boxes of chocolate to people who answer my riddles. Yes it may easy. yes it may be hard. But who knows . It's a lose /win situation. So shall we begin. I have a head and tail but no body. What am I? I run but I don't walk I scream but I don't talk. What am I The one who makes it sells it. The one who buys it doesn't use it. The one who's using it doesn't know he's using it A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?