But like all things, the business has two sides. Clean white teeth are not always wise, now are they? Par exemplum: when I was in the Congo, the only way I could identify the nigger was by the whiteness of his teeth, if you see what I mean. Horrid business. Dark as buggery, it was. And they died because of it, you see? Poor bastards. Or rather I survived, to look at it in another way, do you see?