Dun When it's a cart. [They look at him enquiringly.]

Flo Why, what in earth has a dog's tail to do with a cart?

Dun When it moves about, you know. A horse makes a cart move,
so does a dog make his tail move.

Flo Oh, I see what you mean--when it's a wagon. [Wags the letter
in her hand.]

Dun Well, a wagon and a cart are the same thing, ain't they!
That's the idea--it's the same thing.

Flo They are not the same. In the case of your conundrum there's
a very great difference.

Dun Now I've got another. Why does a dog waggle his tail?

Flo Upon my word, I never inquired.

Dun Because the tail can't waggle the dog. Ha! Ha!

Flo Ha! ha! Is that your own, Dundreary?

Dun Now I've got one, and this one is original.

Flo No, no, don't spoil the last one.

Dun Yeth; but this is extremely interesting.