Oh, fuck! That's entirely hot in the most subtle of ways. I adore it that Harry is carrying his clothes not tack! And his hair a mess and shirt unbuttoned. And Snape so put together, and the whip. And the horse is not tacked up. Stellar misdirection and innuendo--lovely. Plus, Harry has the most sensuous cant to his hips--so, so sexy. This is so deceptively simple. Totally yummy!