Not necessarily fandom, but wanky nonetheless...
Found this little horror on The Mary Sue Report.

This, from the comments, is what really makes it:

I skipped directly to chapter three and found this: "For those of you people who hate me and you still just happen to be reading this, I'll have you know that the Mary-Sue issue was intentional; there is a plot and a moral to this story that's unforgettable, and you're not going to want to miss it. Review, please."

This is my absolute favorite part, though. "Yes, everybody who said my story was total crap is deceived, I tell you! I'm moral and you're not! Nyah!"