It was humiliating, but Draco had fallen into his trap. Slowly, he freed one of his hands before bringing it to his behind. He hesitated for a few seconds under Harry's gaze, but then some of his Gryffindor courage must have rubbed off on him because he gave his arsecheek a hard slap that made him rock against the desk, an electric feeling running through his body as he moaned wantonly.