Answer:
What is it that no man ever saw, which never was, but always will be?
What hangs in the sky by day but at night goes away?
White and thin, red within, with a nail at the end. What is it?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
What occurs once in a minute, twice in a moment and never in one thousand years?
I am your mother's brother's only brother in law. Who am I?