Folie à Deux? More like Folly a D. Joker:Folie à Deuxis not off to a hot start in theaters in any conceivable way. It’s performing well under expectations at the box office so far. The original Joker burst into theaters with almost $100 million in its opening weekend. A few weeks ago, the experts were predicting Folie à Deux would open around $70 million. After Friday, it looks more like that number will be closer to $50 million. One reason why? It’s not just critics who are unhappy about the movie. Audiences who are seeing it don’t seem to like it either. Folie à Deux’s CinemaScore, a rating …