Answer:
What goes through a door but never goes in and never comes out?
Tomorrow's yesterday. Yesterday's tomorrow. What is it?
What never gets any wetter no matter how hard it rains?
What does an old tan broken down house wear outside?
It goes up and down the stairs without moving.
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.