YMMV / Cupcakes

For the fanfic:

  • Memetic Mutation:
    • The fanfiction was so notorious within the fandom that it even got its own confirmed Know Your Meme article.
    • The mental imagery caused by the basic premise of the plot itself, the shocked/disgusted/horrified reactions to the fanfiction being spread around by fainthearted readers (or at least those who have heard of it but haven't read it yet due to fear of being scarred and traumatized for life) across the Internet and the various fan arts it gained had made the fanfiction appear much worse than it actually is.
  • Memetic Psychopath: This fic is single handedly responsible for turning Pinkie Pie into one.
  • Moral Event Horizon: Take a wild guess. The premise is morbid enough that it may taint one's perspective of the real Pinkie Pie.
  • Narm: Besides Pinkie's happy-go-lucky outlook throughout the story, there are several spelling and grammar mistakes as well (a revised edition is included in the link provided on the main page).
  • Nausea Fuel: Do not read this fic if you've eaten or are planning to eat anything today.
  • Never Live It Down:
    • It seems that Sargesprinkles will forever be associated with this fanfic
    • Pinkie's reputation among fans will in turn always be hit with association to this story.
  • Nightmare Fuel: It starts out quietly, but when the gorn hits, it freaking hits.
  • Nightmare Retardant: For those frightened at the idea of Pinkie Pie going insane and murdering her friends, Cheese Sandwich has proven himself to have superior partying/reality-bending powers than Pinkie Pie. Thus, he could overpower her to save her victims. Maybe.
  • Ron the Death Eater: Take a character who is not only a hero, but a nice character overall, though somewhat bubbly, and make her the extreme opposite, though still technically who she is, just insane, and bam, you've got Pinkie in this fic.
  • Seinfeld Is Unfunny: Much of the fanfic's infamy came from the fact that there were hardly any grim-fics in the fandom back then. Cupcakes took nearly everyone by surprise. But now? With many other dark fics that rival that of Cupcakes (like Rainbow Factory, Fallout: Equestria and its popular spin-off), the shock factor that held it up isn't there anymore.
  • Squick: All of it, but most DEFINITELY the part where Pinkie Pie SQUEEZES RAINBOW DASH'S INTESTINES TO GET RID OF THE BODILY FLUIDS INSIDE THEM, THEN FLOSSES HER OWN TEETH WITH SAID INTESTINES, and to top it off, Rainbow pisses herself twice.
  • Take That, Scrappy!: Diamond Tiara is one of Pinkie's victims.
  • The Woobie: You really can't help but feel horrible for poor Rainbow Dash.

http://tvtropes.org/pmwiki/pmwiki.php/YMMV/Cupcakes