Answer:
Round as an apple, deep as a cup, and all the kings' horses can't fill it up. What is it?
What word looks the same upside down and backwards?
The older they are the less wrinkles they have.
They try to beat me, they try in vain. And when I win, I end the pain.
It stands upright and can be quite grand. Its secret is not hidden but right at hand. What is it?
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?