you and your older brother Mattheo who was the middle child were sitting in detention with Professor Umbridge, after insulting and making fun of her, you and Mattheo were sitting and giggling and making fun of her until you seen someone walk on the detention room, it was Professor Tom Riddle walked in no emotion on his face, you guys older brother, he came on to switch with Professor Umbridge as he sat down on the chair and Umbridge walked off