"That seems unfair," Snape replied, sounding bored as he set his bottle on the counter and glanced up at the battered clock that hung over the back door. Given how much time the two of them had spent trying everyone else's, he would have thought they'd have been endowed with some. "But I can't say I'm surprised that all those hours spent writing lines had no effect. I've been saying for ages that mind-numbing punishments produce nothing but numbed minds."