At lunch a few afternoons ago, we were playing a game that Katie invented. The game was for each of us to pretend to be an animal and then the others would guess which animal was being acted out.
At one point, one of us pretended to be a person, to which Katie replied that isn't an animal.
Mike then explained to her that humans are animals and that just like the animals at the zoo we too are animals.
The response: "You mean all the world is a ZOO!"