"The Slytherins like me," Faustus said then his expression became terribly cynical for someone his age. "Of course most of them only like me because Dad's their Head of House. They're Slytherins after all. They're not stupid." He shrugged. "But some of them... the First Years... seems to like me for me."
His mother used to tell him off for saying things like that but Dad just tended to look pleased and when he snuck a look over at him now, there was an approving look on his face. Dad seemed to think that the quicker he became well-versed in the oddities of people, the better it would be. It was kind of interesting and he was glad to know that those Slytherins weren't really his friend. It would stop him from saying something he shouldn't.
He gave Harry a curious look. "Why did you get detention? Or shouldn't I ask?"