The Boomslang Effect

"And you're quite sure your students only know the sensible parts of the story, are you?" Filius asked reasonably. "There were some?" Minerva wondered aloud, dust-dry, as Severus's face fell. (It's 1985, and Hogwarts's most junior (permanent) faculty member may have slightly underestimated his influence on his admiring students. …No, seriously. It's, like, a problem.)