How could he have forgotten? The worst sort of student was undoubtedly the one who later became a teacher. There were few things that grated more than being forced onto a first-name basis with someone you'd watched tripping through adolescence. Severus slowed to glance over his shoulder at him with a blankly innocuous expression.
"No," he said indifferently. "I wouldn't say it was particularly gratifying." He gave him a hint of a smile. "If you're looking to do something about it, I imagine the responsible parties could stand to be given detention. And that is rather satisfying." Snape dismissed almost all younger teachers as overly indulgent, and too concerned with being liked; he doubted Weasley would be any different in that regard.