The Partridge Family
The Partridge Family is an American television sitcom series about a widowed mother and her five children who embark on a music career.

Danny wants to lose weight to impress a girl. Shirley puts him on a diet. After a week, he weighs more because of cheating. Ruben teases him about no will power so they decide to tackle their own vices - Danny's food and Ruben's smoking.