Amongst other silliness, it claims that King John’s titles included Duke of Hazzard, and observes that “peasants were reduced to eating burage and socage.” It also invents a fictitious war against Flanders Fland (a region on the coast of Luxembourg) and cites such scholarly tomes as Bollock and Maidenhead’s classic Interminable History of the English Law.
Note that it includes the phrase “Discipulus tuus hunc tractatum non scripsit.“
More here.