Answer:
I am heavy forward, but backward I'm not. What am I?
I am enjoyed by some, despised by others. Some take me for granted, some treasure me like a gift. I last forever, unless you break me first. What am I?
I am not a toy though many use me for pleasure. I have a butt but I cannot poo.
I love to twist and dance. Though wingless, I fly high up into the sky. What am I?
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
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.