Answer:
What flies forever, Rests never?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
My teeth are sharp, my back is straight, to cut things up it is my fate.
Big as a biscuit, deep as a cup, but even a river can’t fill it up. What is it?
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?