Answer:
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 have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
Though desert men once called me God, today men call me mad. For I wag my tail when I am angry. And growl when I am glad.
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
What flies around all day but never goes anywhere?
You use it between your head and your toes, the more it works the thinner it grows.