"Myrtle Warren was a Muggleborn third year Ravenclaw. Merlin her intelligence rivalled mine already at thirteen, she was a far from a mudblood as possible. She had embraced her magic and celebrated the Magical celebrations, being taught by her Pureblood housemates. I caught a Slytherin third year, Olive Hornby teasing her and her glasses on the day I found her. I cursed her harshly with glee, left her in the corridor and took Myrtle aside. That night in the Slytherin dorms I called Hornby and her Brother, Sage, in front of the entire house with Myrtle at my side. I informed everyone that they had been caught tormenting a fellow student with the mudblood slur in the middle of the corridor where any professor could've seen. Then informed the shaking pair that it wasn't just any student. But their King's soulmate." Tom revealed. Harry and Hermione had to chuckle, the slur mudblood was not to be used on Muggleborns trying to assimilate, especially where a teacher could find them. They would've been punished by their house for that alone.