Answer:
What becomes white when it is dirty?
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?
What has a face, and a tail, but no body?
What suits do lawyers wear?
Why do some people like to eat snails?
I stay where I am when I go off. What am I?