"Simmer down!  You were going to listen; remember?  Ritual cannibalism was a widespread custom among aboriginal American cultures.  But don't take my word for it; look it up.  Besides that, both of us, simply as North Americans, stand a better than even chance of having a touch of the Congo in us without knowing it... and there you are again.  But even if both of us were Simon-pure North European stock, certified by the American Kennel Club, (a silly notion, since the amount of casual bastardy among humans is far in excess of that ever admitted) - but even if we were, such ancestry would merely tell us which cannibals we are descended from... because every branch of the human race, without any exception, has practiced cannibalism in the course of its history.  Duke, it's silly to talk about a practice being 'against instinct' when hundreds of millions of human beings have followed that practice."