"Keep it up Jack and I'll ground you," Vindictus said with a chilling smile. He meant it. No flying. No Quidditch. "Never talk back to a professor. Ever." He crossed his arms and stared at the beligerent Hufflepuff boy. "You have anger management issues. Serious anger management issues. And you're gonna learn how to control your anger before you are even permitted to leave this cell. Understand?"