Answer:
I am your mother's brother's only brother in law. Who am I?
It carries paper of the most important sort but also plastic, I'm glad to report. What is it?
What you become during a workout?
What do people spend a lot of money on every year but never want to use it?
What was the first man made invention that could see through a wall?
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.