If you thought the title and genre were initially baiting and galling to die-hard Joker acolytes, just wait'll you get a load of Folie à Deux itself, which is like a big, extended middle finger to everyone who adored the original movie – as well, perhaps, as a giant eff-you to Warner Bros. for making it, the motion-picture academy for awarding it, and the global marketplace for turning it into a billion-dollar smash.