>>45590947"Fanfic" is an abbreviation for "fanatic fiction".
A fanatic is someone who strongly enjoys something, sometimes to the point of insanity. When used in a derisive way, the insanity is almost always implied.
A fanatic fiction, or fanfiction, is what is created when a fanatic loves a piece of work so much that they produce their own made up stories about it in order to suit their tastes even more. Fanfiction is often of very low quality due to the low bar of entry and lack of restriction on publication compared to any other form of media. Once again, this low quality is almost always implied in a derisive statement.
"Meta" is an abbreviation for "metagame". A metagame is what forms when people are heavily devoted to a multiplayer game. The dominant strategies that arise are the meta game.
A "fanfic meta", or "fanatic fiction metagame" is when fanatics of a game don't like the metagame the way it is, so they tweak it to suit their tastes more.
Smogon, which is named after the German word for the Pocket Monster known as Koffing in English, is a fanatic fiction metagame where the creators force their rules on the playerbase in order to create a metagame that suits their tastes. The derisive use of "fanfic" is appropriate because Smogon's gameplay quality is very low and their obsession with a children's game is indicative of the mental disorder known as Asperger's Syndrome.