The Official Hogwarts Pranksters as the group consisting of Dumbledore, Holmes, Moriarty, Potter and Weasley had begun to call themselves were in the library when they had heard the shout.
Two years earlier, when Amicus Flitwick had found himself married to a goblin, he had been horrified as had his wife. He shortly learned that goblin marriages, even ones done while so drunk you can't stand up and are about to pass out were for life and annullment or divorce were not possible (much to the regret of his poor spouse who had been just as drunk as her new husband). Knowing the consequences of bringing further shame and possible dishonor to his new wife's family, Amicus remained in the marriage, setting up a new household at Hogwarts with his bride and keeping his head.
Thanks to some laws amongst her own kind meant for their own protection, Goldspike (who had woken up married to Amicus much to her dismay) was unable to kill her new husband. She decided to make the best of a bad situation, and wait for her husband to die in a senseless accident. To prevent further shame from coming to her family by any action of hers, she moved to Hogwarts with her new husband.
During the first year and two and a half months, the couple had lived like a pair of roomates, each giving the other their space and only coming together for meals. It was when they both had gone out on a rather fateful evening that their situation had changed. Amicus had gone to his Dueling Club, and Goldspike had gone to the celebration of her younger brother's marriage. Both came home at about three in the morning so drunk they couldn't see straight. At ten in the morning, they woke up in much the same position they had found themselves in the morning after their wedding.
Now, nine and a half months later, Amicus Flitwick was loudly informing the castle of the birth of his son Filius.
The group of pranksters in the library, upon hearing the news, decided to help Amicus celebrate the birth of his son with a display of fireworks. However, the boys' idea of fireworks involved a little spell called Incindeo.
After two singed portraits, a burnt tapestry, and several small fires that had once been completed essays, the culprits had been caught and taken before the Headmaster. Their punishment was to clean the castle from top to bottom.
