Answer:
What does a stone become when in the water?
What is always on its way but never arrives?
What flies forever, rests never?
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
What has no hands but might knock on your door, and if it does you better open up?
Cycle Cycle Cycle.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?