The Wizarding World of Dudley Dursley

Vernon and Petunia are called to a London hospital after Marge Dursley crosses paths with a lorry. In their panic, they accidentally leave Dudley home alone with Harry, who now has an opportunity to get back at his cousin for his years of bullying. Things take a wrong turn, however, when Dudley attempts to use Harry's wand. (Moderately A/U, but Sirius will still be included)