Answer:
What do you call a bear with no teeth?
What has feet and legs, and nothing else?
What has a head and a tail, but no body or legs?
What force and strength cannot get through, I with my unique teeth can do. What am I?
I am filled with garb the price is free. Just return what you don't need.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.