The Simpsons Treehouse of Horror Episode 12 Hex and the City / House of Whacks / Wiz Kids >In a parody of Harry Potter, Lisa and Bart go to the "Springwart's School of Magicry" in which young boys and girls are trained in the art of witchcraft, such as turning frogs into princes, with Lisa's turning into a perfect British one while Bart's results in a freakish, vomiting hybrid. Lord Montymort notices Lisa's spells and he and his snake sidekick, Slithers decide to capture Lisa in order to increase his power. Montymort looks for someone to assist him and chooses Bart, who agrees to Montymort's proposal...