Answer:
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
What kind of cup doesn't hold water?
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
What is it that given one, you'll have either two or none?
I am someone you don't know. Who am i?
It is something you will never see again.