What's made of wood but can't be sawed?
Mr. Smith has 4 daughters. Each of his daughters has a brother. How many children does Mr. Smith have?
What goes up when the rain goes down?
Wednesday, Tom and Joe went to a restaurant and ate dinner. When they were done they paid for the food and left. But Tom and Joe didn't pay for the food. Who did?
If you're in 3rd place and you passed the person in 2nd, what place are you in?
What demands an answer, but asks no question?