First off, I laughed my fool head off. It's just too perfect, and even though we all believe it's an accident I think Derpy's tongue being out adds a little doubt.

More importantly, it's stunningly gorgeous work. The princess looks amazing, even soaked. The forms and textures are all perfect, making her beautiful despite the unexpected shower. The wet coat and especially her mane and tail are perfect – still lovely and perhaps even a little more charming. The balance of mass versus its ethereal nature and the sparkling came out beautifully. Also, Celestia's annoyed expression is priceless.

Meanwhile Derpy looks pretty great too, with great details and awesome textures too. I love her curious look as she tries to figure out what she's done wrong. Also, the show-style cloud looks great with so much depth and substance. (That goes for everything, really.) Thanks for sharing such a funny and awesome piece.