Answer:
What can you fold but not crease?
What goes further the slower it goes?
What is neither inside the house nor outside the house but a necessity for any home?
It's got twists and turns, but has no curves. Twist it to fix it, turn it to ruin it. What is it?
The ones who see it may go blind, Contracting the fool's madness. You have to dig to find it, Crush big stones or mine it. Wash dirt clumps in a pan and wait for it to settle, A shiny, precious metal.
Long and slinky like a trout, never sings till it's guts come out.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?