Answer:
What has a mouth but can't chew?
What tree that definitely grows does not have a shadow and does not grow fruit?
What binds two people yet touches only one?
What has a neck and no head, two arms but no hands?
What is as big as you are and yet does not weight anything?
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?