Answer:
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
Never ahead, ever behind, yet flying swiftly past, for a child, I last forever, for adults, I'm gone too fast.
What can you catch but never throw?
It is greater than God more evil than the devil. The poor have it the rich need it. If you eat it you will die. What is it?
What runs but never walks has a mouth but never talks has a head but never weeps has a bed but never sleeps?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.