Trt, that conversation brought to mind a similar one from "Alice In Wonderland".
“Mad Hatter: Would you like a little more tea?
Alice: Well, I haven't had any yet, so I can't very well take more.
March Hare: Ah, you mean you can't very well take less.
Mad Hatter: Yes. You can always take more than nothing.”
Funny kids are so amusing. When my son was little he had to draw a picture of a dog so he draws this lovely picture of grass and sky and a hill but no dog. So when I asked where was the dog he replied it was on the other side of the hill.