Answer:
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
What has two legs but doesn't walk?
Break it and it is better, immediately set and harder to break again
Who eats a lot of iron without getting sick?
What is made of wood but can't be sawed?
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?