Answer:
Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth. What is it?
My teeth are sharp, my back is straight, to cut things up it is my fate.
What is so fragile that saying its name breaks it?
It is sometimes known to have silver linings.
I can be written, I can be spoken, I can be exposed, I can be broken.
What did the piece of wood say when he saw the screwdriver and screws approaching?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?