Question: What am I?
Answer: A question.
Question: What goes up, lets out a load, then goes back down?
Answer: An elevator!
Question: What's the difference between a well-dressed man on a bicycle and a poorly-dressed man on a tricycle?
Answer: A tire!
Question: I have a foot on either side of me and one in the middle.
What am I?
Answer: A yardstick!
Question: What stays where it is when it goes off?
Answer: An alarm clock.