There are several imaginative pieces of work in the Brony fandom. One of which on Tumblr is the works of Ask Twilight Sparkle/Werelight Shine. It's a story based on the game Sonic Unleased, only with Twilight. In that story, she is possessed by a Windigo (a creature featured in 'Hearts Warming Eve' that is a creature which thrives on hatred) and she becomes a were form whenever night falls. In this little scenario, it seems that the Windigos are now attepting to retreave their trapped spirit by having constant Windigos entering Werelight against her will. Poor dear. XD Hopefully they'll find what they're looking for from her before she gets too big, but at this rate, she'll have to worry about a lot more things other than becoming any larger. I'm not sure if this is considered either stuffing or vore. Oh well. XD

No disrespect to the original creator of this Tumblr, it is very imaginative and entertaining, feel free to check it out here; http://twilightunbound.tumblr.com/.

Enjoy!

Made in GIMP.
Twilight Sparkle (C) to Hasbro and Lauren Faust
Werelight Shine (C) to AdvancedDefense
Artwork (C) to duragan