Applejack's got a secret she'd kept hidden for many years. Nopony would ever have guessed what she and Twilight were up to in the library late at night, once Spike had gone to sleep. That is, until a jealous Rainbow Dash decided it was her business to find out just what in the hay was going on.

In a poorly informed bout of revenge, Trixie has returned to Ponyville to make Big Macintosh and Rarity fall in love, because she's convinced this will prove she is the Best Showpony in all Equestria.
But Rarity's going to the spa with Fluttershy, Big Mac has chores to do, and Twilight hasn't the faintest as to why her best friend and best friend's brother are having an episode of freaky Friday...

This story will not be completed by its original author, though if one is interested, they can adopt the story and finish it as they see fit. Unpublicized story resources exist.