"Gotcha! Hahahaha!" laughed Celestia, standing up and taking a few steps back from Luna. "Oh, I will cherish the look on your face for a long time. Which is just as well, because you shortly will not have one." Luna frowned and went to enquire as to what this meant, only to find that it was getting very hard to hear on account of that sizzling noise that seemed to be going on all around her. And what was that odd feeling? She wiped her face with a hoof and examined it. It took a few seconds for her to realise she had just wiped most of said face off by accident, and that by this point her head was little more than a rapidly dissolving skull. Her brain was able to conjure up one strong thought before the acid reached it: