Answer:
What do people make that you can't see?
Why did the chicken cross the road?
Arnold Schwarzenegger has a big one, Michael J Fox has a small one, Madonna doesn't have one, The pope has one but he never uses it, Bill Clinton has one and he uses it all the time! What is it?
I have four fingers and a thumb but I'm not living what am I
Why do French people like to eat snails?
When is it bad luck to see a black cat?