My favorite part about that line is that it implies that Gilderoy Lockhart was a more competent teacher than Dolores Umbridge. And that may be the biggest insult in the entire series.

And the triple burn goes to Minerva, because while we, the readers, aren’t anti-werewolf, Umbridge is and she knows full well who taught Harry in his third year.

Professor Quierrel while possessed by Voldemort, Gilderoy Lockhart, Remus Lupin and Barty Crouch Jr. pretending to be Mad Eye Moody were all more competent Defense Against the Dark Arts teachers.

As readers, we all know that Remus was the best. But the insult to Umbridge over all four…it’s delicious.