...If you mess with Nepeta Leijon's "meowrail", you're in for a treat. A colorful, bubbly, equestrian treat. A treat that may or may not be from My Little Hoofbeast: Friendship is Not an Emotion. (A Homestuck and MLP crossover.)

Every My Little Pony and Doctor Who fan knows that Derpy would be a good companion. But why?