Answer:
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
A word I know, six letters it contains. Subtract just one and twelve remains.
What type of paper can you neither read nor write on?
Take one out and scratch my head, I am now black but once was red.
He has married many women, but has never been married. Who is he?
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?