It's Twilight's birthday! Pinkie gives Twilight a book on how to be Pinkie. At first dubious, Twilight becomes fascinated by the view into Pinkie's mind.
For her birthday, Pinkie gives Twilight a book on how to be Pinkie. At first dubious, Twilight becomes fascinated.
After a telepathy experiment goes awry, Pinkie Pie becomes Twilight and Twilight becomes Pinkie.