LONDON ? If you're still unsure about whether the eighth Harry Potter book is a novel, or when exactly it's going to be set, J.K. Rowling has some blunt words for you. The Harry Potter author and undisputed Twitter badass took to social media on Thursday morning to debunk rumours and field questions from confused fans. First, she cleared up the rumours about another 'novel.' Then it was back to the old 'prequel' debate. It wasn't long before the old jokes started. Eventually, one fan came up with a suggestion. Rowling has spoken, Twitter. Don't ask her again, okay?