"Piggate" refers to an uncorroborated anecdote that during his university years former British Prime Minister David Cameron inserted his penis and/or testicles into a dead pig's mouth as part of an initiation ceremony for the Piers Gaveston Society at Oxford University. The anecdote was reported by Michael Ashcroft and Isabel Oakeshott in their unauthorised biography of Cameron, Call Me Dave, attributing the story to an anonymous Member of Parliament who was a "distinguished Oxford contemporary" of Cameron's. Extracts from the book were published in the Daily Mail on 20 September 2015, prior to its publication.