The opportunity was too perfect to miss. Harry crept silently around behind Malfoy, Crabbe, and Goyle, bent down, and scooped a large handful of mud out of the path.
¡°What's all the noise?¡±
Professor Lupin wasn't there when they arrived at his first Defense Against the Dark Arts lesson. They all sat down, took out their books, quills, and parchment, and were talking when he finally entered the room. Lupin smiled vaguely and placed his tatty old briefcase on the teacher's desk. He was as shabby as ever but looked healthier than he had on the train, as though he had had a few square meals.
Harry suddenly realized that there were tears on his face mingling with the sweat. He bent his face as low as possible, wiping them off on his robes, pretending to do up his shoelace, so that Lupin wouldn't see.
¡°What defenses?¡± said Harry at once. ¡°Can you teach me?¡±
Professor Trelawney's head fell forward onto her chest. She made a grunting sort of noise. Harry sat there, staring at her. Then, quite suddenly, Professor Trelawney's head snapped up again.