Answer:
What goes up and down the stairs without moving?
What's always coming, but never arrives?
What’s full of holes but still holds water?
I know a word of letters three, add two and less there will be.
It can be used onstage or to express admiration. What is it?
What did the piece of wood say when he saw the screwdriver and screws approaching?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?