Answer:
A hole leading in, a hole leading out, we connect to a cavern that is slimy all throughout. What are we?
Long and slinky like a trout, never sings till it's guts come out.
I can move even when you are still. I can be one or many.
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
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?