Answer:
There is an ancient invention still used in some parts of the world today that allows people to see through walls. What is it?
You speak this when you are being sincere.
What is red, bloody and smells like an orange?
What has one hand longer than the other, and goes on all day and night?
What goes up but never goes down?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?