Answer:
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.
We travel much, yet prisoners are, and close confined to boot. Yet with any horse, we will keep the pace, and will always go on foot.
It's been around for millions of years, but is never more than a month old. What is it?
I have legs but walk not, a strong back but work not. Two good arms but reach not. A seat but sit and tarry not.
I bind it and it walks. I loose it and it stops.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?