1. Literature written about/inspired by movies/games/tv shows/etc by fans of that particular subject matter.

2. Stupid stories written by fanboys/fangirls and general idiots (see 133t douche and blogger.) Often not worth reading.
FanFiction Asshole: Hey, have you read my new story in which two of the characters from the shitty anime show I always watch have sex?

Normal Guy: Never talk to me again.
by James "Stardust" Bond May 2, 2005
Get the fanfiction mug.
Fiction written by fans or a genre,includes:
~anime
~music
~celebrities
The Music fanfiction is by far the most varied,last time I checked there were 1460 pieces of fanfiction written about a single band.And that's just ONE band on ONe website.That band was My Chemical Romance.About 90% of fan-fic about MCR is just sex really (usually Gerard Way/Bert Mccracken ,Gerard Way/Frank,or,nastily,Gerard Way/Mikey Way).The rest are stories about the band menbers being vamires which are preety funny. But most of it is just really,really,sick. Take a sick-bag.
Weird Person:"Gerard Way is so doing Bert from The Used.They are SO butt-buddies.
Real MCR fan:Yeah.Whatever.
Weird Person:Wanna read my fanfiction I wrote about Gerard getting Butt-raped by Bert,then Frack,then me,then Bert again then his own brother?
Real MCR fan:uhh...OKay
~Reads it~
~Barfs everywhere~
~Punches Weird Person out~
~Barfs everywhere~
by MCRmy June 6, 2006
Get the fanfiction mug.
Literature written for the simple purposes of either to change completely your opinion of a character or to disturb others with your messed up idea of how the plot should be. Can also be a way for more pervs to pollute the internet.
That is one messed up fanfiction.
by nooooooooobooooooodyyyyy September 3, 2008
Get the fanfiction mug.
a story written by a fan of something (ex: anime). there is a website called fanfiction.net that is deticated to fanfictions. but most of it is hetalia yaoi. you could also use deviantart but most of the stuff on there is emo sonic and hetalia fanfics where a mary-sue oc has sex with the writer's favorite character while another character that liked or was there best friend mopes around and ends up commiting suicide. but the oc doesn't give a shit. instead s/he possesses a magical power or something crazy like that. s/he saves the world, and then everyone worships him/her. THE END.
HetaFag: OMG I JUST WROTE A FANFICTION ABOUT RUSSIA AND LATVIA HAVING SEX!
Regular Hetalia Fan: Screw that!
by bga4ever June 16, 2012
Get the fanfiction mug.
Gay crap thought up by retarded otaku anime fangirls in which they get to have sex with their favorite anime characters cause they can't get any in real life.
Here is an example of fanfiction:
Sasuke insisted that Orochimaru use the cherry flavored condoms over the blueberry ones, but Orochimaru wanted to do him in the ass instead.
by Me.. August 28, 2006
Get the fanfiction mug.
A synonym for plagiarism.

See also: disrespect, creative rape, theft of intellectual property.
Fanfiction is taking an author/creator's work, building on it, twisting it, and distorting it so that the creator's vision is no longer recognizable, without even asking the creator's permission or taking his attitude toward his work into account.

Any fanficcer who claims to have an ounce of integrity is lying to you and to himself.
by nat s. March 19, 2008
Get the fanfiction mug.
1. Noun; nouns coming before it often act as adjective ("Warhammer 40,000 Fanfiction"). A story based within a pre-existing world, which may or may not include canonical (canon) characters as major or minor actors. Usually also includes non-canon characters, commonly referred to as OCs among the community. Though technically canon characters are also OCs, stories that focus majorly or entirely around OCs are considered 'OC fiction', or 'OC stories.' Many OC stories allow readers to submit their own characters to the story, though it's wise to do some research before hand to avoid having your character butchered.

There are many fanfiction writers out there who do genuinely amazing work with fanfiction, especially with stories which involve no canon characters. It's very difficult to butcher a canon character's personality if they're not present, and it's fairly easy to remain true to lore in most cases.

Unfortunately, there's also a lot of horny idiots who write fanfiction so that they can see their favourite characters having sex, even if there is no way this would ever happen in the source material ever. There's also a fair amount of fics that turn otherwise well-rounded characters into complete Mary Sues (see the fanfiction written for Homestuck's Vriska--actually, don't; I don't want to responsible for making anyone cry), or which completely ignore established canon in favour of headcanon.
1. Fanfiction.net is full of both excellent and terrible fanfiction.
1. I was about to read the Homestuck fanfiction, but then I saw the words "All Vriska ever wanted was to have friends" and threw my computer out the window.

1. I submitted my carefully thought-out, asexual, sociopathic serial-killer OC to an OC story. Three chapters later, she was rescuing babies from wells and kissing random girls, and I was contemplating suicide again.
2. The close-minded asshole refused to even contemplate reading fanfiction, because he thought the above examples were all there is in fanfiction.
by Snowskeeper April 4, 2013
Get the Fanfiction mug.