Answer:
How can you throw a ball as hard as you can, to only have it come back to you, even if it doesn’t bounce off anything?
Hearing something unexpected or touching a live wire can have this effect.
Longer than a decade and shorter than a milennium
What gets broken when you don't hold it?
Which weighs more? A pound of iron or a pound of feathers?
How can you tell when a mummy has a cold?