Riddle: Imagine that you are a bus driver driving 10 people. You stop at stop 1 and 5 people get off and 2 people get on, then you stop at stop 2 and 2 people get off and 9 people get on. So on and so on. Now here's the question, what is the bus driver's name?
Answer: Whatever your name is! I said imagine you are a bus driver!