An Aristocrats Joke
If you haven't seen the movie, this joke probably won't strike your funny bone. Actually, it won't strike your funny bone anyway, but if you're not familiar with the Aristocrats joke the significance will be lost.
In the movie, one of the comedians (it might have been George Carlin?) suggests that the Aristocrats joke, supposed to be the most disgusting joke ever, is really a class commentary. With that in mind, calling the Bush family and the series of Bush administrations and their collected disasters "The Aristocrats" suddenly resonates.
And, the number of deaths we can lay at the Bush family's door is more obscene than most versions of the joke.