"Handy, that." Draco said, sarcasm dripping. "Especially since this is a very good test of my own loyalty, isn't it? My Aunt has been testing it for years, Prof - Snape. If you think your word and some story is going to make me turn away from His Mark you're an idiot." Even if he'd already admitted to being a traitor, to speaking to Dumbledore, or might as well had.