The worst fanfiction you've ever read

[90's Child]

Due to Sturgeons Law that 90% of Everything is Crap, fanfiction is filled with many horrendous crimes against the written word done by hordes of addle-brained fan girls, so what is the worst of the medium that you have read? It could be a horrendous destruction of the shows you loved as a child (Sometimes bordering on literal rape of your childhood), a terrible Mary-Sue, or one of the most perverse things you've ever read, just tell us about it here.

Just please, please for the love of god don't post a link to it, because we probably don't want to experience the horror face to face.