The Daily Life of a Hogwarts Terrorist

Before meeting Louise, Simon Finnigan's school life was unhappy.
In the corridor, with a wave of his wand, an explosion occurred, damaging several public properties. Filch: "You little brat, the chains and handcuffs are polished!"
During Charms class, he waved his wand, and an explosion occurred, sending Harry Potter flying. Flitwick said, "Mr. Seamus, come to my office after class."
In Transfiguration class, he waved his wand, causing an explosion that destroyed several students' robes. Vice-Headmist McGonagall announced, "Mr. Seamus, go to the warden's office after class for a week of punishment." (Hermione and Parvati strongly supported this decision.)
In Potions class, Seamus waved his wand, causing an even bigger explosion. Seamus explained that he was just stirring soup. Professor Snape ordered, "Clean the prize room for a month! No magic allowed! Wipe it with your hands!"
Simo: "Waaah, I hate explosions the most!"
Upon meeting Louise Zero, Simon Finnigan exclaimed, "Art is an explosion!"