Lamilton Taeshawn is based on Latarian Milton, a 7-year-old Florida boy who became an Internet sensation due to news reports of his run-ins with the law. In one incident, he took his grandmother's SUV for a joyride destroying property in the process. In another, he attacked his grandmother when she refused to buy him chicken wings. "It's fun to do bad things" and "He smokes with cigarettes" are direct quotes from the interviews with Milton.
The choir is just chanting "Lamilton Taeshawn" dramatically over and over.
Dr. Doomis is a parody of Dr. Loomis from the Halloween franchise, the voice actor Tom Kane even voiced Loomis in Halloween H20 (1998)