The Simpsons (1989): Season 12, Episode 11

12 - 11: Worst Episode Ever

Bart and Milhouse are at the Android Dungeon and end up being banned from the store for a lifetime. After Comic Book Guy has a heart attack, Bart and Milhouse take over running the store for him. Once Comic Book Guy recovers, he starts dating Principle Skinners mother. Blackboard 'I will not hide the teacher's medication'.