Family Guy - Season 4 Episode 2 Fast Times at Buddy Cianci Jr. High Parental Discretion Advised, that's how you know it's good.
Overview: Brian becomes a substitute teacher at Chris' school after his teacher wins the lottery. When Brian is moved to teach a class of troubled kids, Chris falls in love with his new teacher, Mrs. Lockhart, who promises to love Chris only if he kills her husband. When Lois finds out, she and Stewie decide to teach Chris a lesson.