At first, Snape rolled his eyes at the young women's comments. What had he said to give the impression that he owned either of them? What had he done to indicate that he deserved to be treated with anything but the respect due any sovereign person. Did he have a sign saying 'Disrespect Me' hanging around his neck? It was almost more than he could bear. Faith's cutting comment about his lack of experience spending time with naked young women only bruised him slightly. If the naked young women in question were going to treat him as these were, he wasn't sure he wouldn't rather be with clothed women, or no women at all. Pricking up his ears at Mercy's suggestion, he hoped the two of them would attempt to thread the maze. Perhaps something dreadful would happen to them and they would learn their lessons.
Faith's next comments, however, left the dour wizard quite confused. 'Harry Potter thing'? What was that supposed to mean? And how did she suddenly gain knowledge of his secret ambitions? And which movies, in particular, was she referring to? The possibility that some muggle had made a movie about Potter... but maybe she was from the future, a future in which Potter had become famous, or infamous, in the muggle world, a traitor to wizardkind. He shouldn't be surprised. Deciding he was the person to single-handedly destroy centuries of secrecy and protection for their people in the name of 'unity' or 'wizard-muggle integration' was just the sort of thing Potter and his insufferable friends would do.