From the Academy Award nominated film, Stand By Me. Based on the short story by Stephen King, The Body. This is probably the most memorable scene from the film.

Four boys decide to go on a journey to uncover the body of a local missing boy, hoping to become heroes. While on their journey, Gordie tells the fictional story of David "Lard-Ass" Hogan, an obese boy who is constantly bullied. Seeking revenge, Lard-Ass enters a pie-eating contest and throws up deliberately, inducing mass vomiting among contestants and the audience (which Gordie dubs a "barf-o-Rama").

I edited out the parts where Teddy keeps interrupting Gordy.