Answer:
Sharp and long, flag of the world. What is it?
I grow where no flower grows, where no light touches the walls, up or down, that I don't care, was here before people were.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
What is so fragile that saying its name breaks it?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?