"My Little Ponies - Cupcakes" is an animation made for Newgrounds by rebornMCW. Despite bearing "Cupcakes" in the title, it has nothing to do with the Creepypasta, let alone be released after it. It was first uploaded to the site on February 24, 2011. It is also one of the first My Little Pony based screamers to exist.
The animation opens with the character Pinkie Pie snacking on some cupcakes which were meant for Fluttershy, as revealed by an annoyed Applejack. She tries to get Pinkie's attention, to no avail. We cut to Applejack's POV, where she stretches out an arm to tap Pinkie's shoulder. Not long after that though, Pinkie suddenly turns around to our POV with a horrific face and lets out a monstrous roar. The screen fades red as this happens. After a white flash, everything goes normal and the short ends with Applejack clearly afraid as Pinkie continues to eat.
NOTE: The following animation contains a screamer.