Or is it the Yankees and the Red Sox, respectively?
Ben McGrath takes his shot at this idea.
But see an earlier version, by Frederic Frommer.
Or my own take.
(The title, btw, comes from PJ O'Rourke. You will laugh. Unless you are some liberal or something. Then you will say, in this as in all things in your life, "THAT's not funny!" As in, "How many feminists does it take to screw in a light bulb?" Answer: "That's not funny.")