Saturday Night Live's George W. Bush has signed up to play Ronald Reagan in a movie that sounds like it could annoy many of the former president's fans. Sources tell Variety that Will Ferrell will star in and produce Reagan, a Mike Rosolio-penned comedy that appeared on the Black List for the best unproduced scripts. The list's description of the plot: "When Ronald Reagan falls into dementia at the start of his second term, an ambitious intern is tasked with convincing the Commander-In-Chief that he is an actor playing the President in a movie." There's no director on board yet, according to the Hollywood Reporter, which notes that Lena Dunham and John Cho took part in a live reading of the script last month. (More Will Ferrell stories.)