After much Googling, I was unable to find a dodgy-o-meter. However, I believe it's safe to say that on a scale of 1-10, Raven ranks somewhere around infinity.
You know my honest opinion of Rave is that he's one of those people who go out of their way to be weird. You classic stereotyped gamer who has never gotten laid and this people will think more of him if he says stuff that go against the status-quo. When in actual fact people think he's a idiot who only says something to get attention....