Answer:
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
What has a big mouth, yet never speaks?
The sun bakes them, the hand breaks them, the foot treads on them, and the mouth tastes them.
Jack and Jill when up the hill jack fell down
Upon me you can tread, though softly under cover. And I will take you places, that you have yet to discover. I'm high, and I'm low, though flat in the middle. And though a joy to the children, adults think of me little.
What did the piece of wood say when he saw the screwdriver and screws approaching?