Answer:
Long legs, crooked thighs, little head, and no eyes.
I can move even when you are still. I can be one or many.
What has a bell but isn't a church. Is full of air but is not a balloon?
It is a sound of empty, speak and it'll talk back plenty. But all the more you yack, you'll get the same words back.
What stays the same size no matter how much they weight?
I have feet on my head
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?