Answer:
There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.
What word is the same written forward, backward and upside down?
How can you burn an apple, blueberry, rose and pumpkin without leaving any ashes but retaining the smell of it?
What dress does everyone have, but no one wears?
In we go, out we go. All around and in a row. Always, always steady flow. When we'll stop, you'll never known. In we go, out we go.
You use it between your head and your toes, the more it works the thinner it grows.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?