King of the Hill - Season 1 Episode 10 -

Hank catches Bobby smoking, and punishes him by making him smoke a whole carton of cigarettes. The plan backfires when not only does Bobby get addicted to cigarettes, but Hank and Peggy get re-addicted. They enlist many ways to help them quit as a family. Luanne saves the day, when she becomes "fed-up" with the addiction.