Simpsons Season 19, Episode 7: Husbands and Knives

When a new comic book store, "Coolsville Comics & Toys" owned by a friendlier owner named Milo opens up directly across the street from Comic Book Guy's store, Comic Book Guy competes for his customers. When he finally gives up, he sells the Android's Dungeon to Marge, who opens up her own women-only workout center.