Mr. Smarty Pants is Twilight Sparkle's childhood doll. We all know that. But what if I was to tell you that this doll had a secret? The secret being that it has always been rather... hungry.
Twilight Sparkle has developed OCD. When she begins to feel like something is missing from her schedule, she wracks her brain in an attempt to find what she's lost. This is her side of the story.