Of course it is entirely improbable that Attorney Generals travel all over the world to look into screwball conspiracy theories, but AG Barr has made the improbable come true, so we can now say “when pigs fly” and really mean it!
The 2009 H1N1 Virus which is believed to be made up of Human, Swine, and Bird parts.
The chance of getting this new virus from pigs, birds and people in the spring is about one chance in a million. I think that's why we call it the when pigs fly virus.