Old people and owls are said to be this.
A sphere has three, a circle has two, and a point has zero. What is it?
Kids play it and Michelangelo sculpted with it.
What cannot talk but will always reply when spoken to?
What goes through a door but never goes in and never comes out?
Big as a saucepan, deep as a cup, Even a river can't fill it up. What is it