Known for being the most horrifying, disturbing My Little Pony fanfiction ever. Was first posted on 4Chan, then posted on a website called Equestria Daily.
In this fanfiction, Rainbowdash (A character from the popular show My Little Pony: Friendship is magic) goes to see Pinkie Pie (Another character) of whom has told her they were going to do something fun together. Pinkie Pie then proceeds to explain they're going to make Cupcakes.
Upon finding this out, Rainbowdash is force-fed a cupcake that puts her into a deep sleep. When she wakes up, she's tied with her legs spread open. Pinkie Pie then proceeds to cut her friend open in intimate detail, and after she dies bakes her into cupcakes of which she feeds to her friends.
Bronie: Dude have you read the Cupcakes Fanfiction?
Bronie 2: Yeah, and I still am too scared to eat a cupcake!