Answer:
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
What goes through a door but never goes in. And never comes out?
What has 4 legs in the morning, 2 legs in the evening and 3 legs in the night?
It is a part of us, and then replaced. It escapes out bodies, to a better place. The world becomes its sizeable home. Its passions unrestraint, the planet it roams.
What is lengthened by being cut at both ends?
If you count 20 houses on your right going to the store and 20 houses on your left coming home, how many houses did you count?