Beavis and Butt-Head are watching an award show on TV and see Morgan Spurlock of Supersize Me fame on the red carpet with a woman in tow. Butt-Head explains to Beavis that Spurlock is famous because he ate nothing but fast food for a whole month. The boys then decide to do the same thing thinking it will result in fame and women. The boys begin eating large amounts of fast food at Burger World for days and then volunteer to work a shift for their manager, who allows them free food in exchange. The boys then quickly grab as much as they can before leaving. The boys continue to gorge while in school until Mr. Van Driessen tells them food is not allowed in class. Butt-Head quickly sways Van Driessen's opinion by explaining that they are eating for 30 days "like that Sherlock dude". Van Driessen assumes that the boys are doing this to showcase the dangers of teenage obesity and he allows them to continue eating in class, and even gets two of the boys' classmates to do a video documentary as their semester service project. Beavis and Butt-Head both gain a large amount of weight, and their video reaches Burger World headquarters, who decide to give Beavis and Butt-Head all you can eat coupons for Taco Yummo. Then Taco Yummo headquarters see another video and provide gift cards to Wiener Shack. The episode ends as the Taco Yummo boardroom staff rush out to get Beavis and Butt-Head away from their restaurant as the boys can be seen on TV declaring that "Teen obesity kicks ass!"