Don't get me wrong. I'll be the first one to admit I love me some fan fiction. Heck, I've posted links to some good stuff here. Fanfic lets you experiment with the story and try new things. In fact, one of my favorite episodes of Supernatural is when the Winchesters find out about Chuck Shurley's novels. Then to Dean's eternal WTF, he discovers fan fiction about himself.
Dean: There's Sam girls and Dean girls. And what's a slash fan?
Sam: As in... Sam slash Dean. Together.
Dean: Like... together together?
Dean: They do know we're brothers, right?
Sam: Doesn't seem to matter.
Dean: Ah, come on. That... that's just sick.
But his question did get me thinking. What would happen if for some reason the two met?
I think Anthea would smack Sam upside her head for being a dumbass.
So what do you call it if you write fanfic about your own characters?