Answer:
Who is it that rows quickly with four oars, but never comes out from under his own roof?
What five-letter word becomes shorter when you add two more letters?
I am so simple that I can only point. Yet I guide men all over the world.
What do you throw out when you need it but put away when you donβt?
What kinds of men are always above board?
What is so fragile that saying its name breaks it?