The good people of Weston-super-Mare have been “pranked”. They went to bed thinking someone was making a film in their redundant seafront lido, then woke to discover the secretive street artist Banksy had turned it into Dismaland, a grimly satirical art exhibition.Who knew that “prank” was a verb, and a transitive verb at that? Take a quick look at MailOnline, though, and you will see plenty of examples. “Friends prank man by lacing his McDonald’s milkshake with chilli sauce,” says one headline.A “prank” is a practical joke, which sounds harmless enough, but can be nastier, more akin to a dirty trick. That is a return to the word’s roots. The noun, which has no known origins, is first recorded at the time of Henry VIII, when it m