Answer:
I can be in your body but never on your placemat. I'm always better when I'm fresh, but you'll never see me in the flesh. What am I?
Drop me and the world will shatter. You can always find me where you empty your bladder.
In a tunnel of darkness lies a beast of iron. I can only attack when pulled back. What am I?
In many hall ways you would stand if not with me in hand.
What has to be broken before you can use it?
I am your mother's brother's only brother in law. Who am I?