Answer:
What word looks the same upside down and backwards?
What turns from red to black as soon as it touches water?
There is a puzzle which can be asked all day with a different correct answer each time. What is the puzzle?
What's black when you get it, red when you use it, and white when you're all through with it?
When the horse strokes the cat, the wood begins to sing.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.