Answer:
What is it that has four legs, one head, and a foot?
What is the only letter in the alphabet that does not appear anywhere on the periodic table of elements?
What is the thing which, once poured out, cannot be gathered again?
Five hundred begins it, five hundred ends it. Five in the middle is seen. First of all figures, the first of all letters. Take up their stations between. Join all together, and then you will bring before you the name of an eminent king.
Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. 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?