Answer:
What can you hold in your right hand but never in your left hand?
How could all of your cousins have an aunt who is not your aunt?
An archaeologist digs up two perfectly preserved bodies. He immediately identifies them as Adam and Eve. How can he tell they are Adam and Eve?
What can you stick between a 3 and a 4 so that the result is more than three but less than four?
What can you fill a room with that takes up no space?
What goes around and around the wood, but never goes into the wood?