Just because you're allowed to use magic now you don't have to whip your wands out for every tiny little thing!
Divination is turning out to be much more trouble than I could have foreseen, never having studied the subject myself.
You are here to learn the subtle science and exact art of potion-making.
Harry had long since learned that bangs and smoke were more often the marks of ineptitude than expertise.
I take my hat off to you — or I would, if I were not afraid of showering you in spiders.
I'm more of a chaser, really.