Answer:
Runs smoother than any rhyme, loves to fall but cannot climb!
What doesn't get any wetter, no matter how much rain falls on it?
What goes around and around the wood, but never goes into the wood?
What kinds of men are always above board?
What can be forever wound up but never annoyed?
What age most travelers have?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?