Answer:
I always follow my brother but you cannot see me, only him. You cannot hear him but you can hear me. What are we?
It can cause deflation of tires when dropped from the rear of spy cars.
What kinds of men are always above board?
Fatherless and motherless. Born without sin, roared when it came into the world. And never spoke again.
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
It rows quickly with four oars but never comes out from under his own roof. What is it?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?