Harry Potter's twelfth birthday was wildly ignored by his uncle, aunt, and cousin, although Dudley did remember his birthday and mocked him for it. On this day, Dobby the house-elf arrived and warned Harry not to return to Hogwarts School of Witchcraft and Wizardry. When Harry refused, Dobby took it upon himself to try and keep Harry safe, using a Hover Charm to smash a pudding in the Dursleys' kitchen.