[Tickling] [Foot Fetish]
Pinkie Pie told Princess Celestia that if she left a pair of stocks by the fireplace, come Hearth's Warming, there would be a pony locked up there to be tickled! Of course, Luna found this a fantastic fabricated fable.

But when Hearth's Warming arrives, something amazing happens!

To Luna's surprise, there is a pony in the stocks to be tickled!

To Celestia's surprise, Luna is that pony.