"Jumbo Johnny" is the 1st part of the 10th episode in season one of Johnny Bravo, which first aired on September 8, 1997. The episode features Johnny trying out a muscle ripper called "Uber Mass" which, according to the salesman, takes 6 weeks to work. Johnny drinks all of the cans he ordered, and as a result, he becomes morbidly obese and tries to find a way to reverse the effects.