So you're not sure about Kitty Pryde, right? Is she a legit MC or just a creation of the Internet? Let ex-Libertine Pete Doherty help answer that one for you. "Siberian Fur" is one of a couple new Doherty demos to emerge on the blog of producer Adem Himli (who is currently recording Doherty's second album) and on it, Doherty ...