Answer:
Who works when he plays and plays when he works?
What kind of dog has no tail?
There is a pencil, an eraser,ruler and a razor blade in your pocket what is the next thing you can find there?
What has a tongue but cannot talk, gets around a lot but cannot walk?
If you drop a yellow hat in the Red Sea what does it become?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.