Answer:
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
If eleven plus two equals one, what is nine plus five equal to?
What goes through a door but never goes in. And never comes out?
Describes universities like Harvard and can be poisonous.
What has six faces, But does not wear makeup. It also has twenty-one eyes, But cannot see?
What did the piece of wood say when he saw the screwdriver and screws approaching?