The film begins with prison inmate Luther speaking directly to the camera to an unseen individual, telling the story of Dizzy Gillespie Harrison, an 18-year-old nerdy high school senior in Austin, Texas. Dizzy is friends with Nora, Kirk, and Glen, who together started a funk rock band called "Suburban Funk" and are addicted to video games. They attend Rocky Creek High School, where Dizzy is picked on by everyone, especially star football player Barclay. After Tina Osgood touches his arm, causing him to have an erection and embarrassing him as the jocks belittle him, his briefs were yanked from underneath his pants and placed around his head. The school librarian "breaks" his penis after Dizzy refuses to "hand" over the "weapon" to her. Dizzy is misdiagnosed with Tourette's syndrome; he is then placed on medication by the school counselor who advises his father to spend every moment possible with him. While at the mall's food court, the heavily-medicated Dizzy makes a fool of himself at a church revival and gets arrested.