It was also an intentional call back to the first season episode "Krusty Gets Busted" where it was a catchphrase of Krusty the Clown. When people in the episode eventually got tired of the catchphrase "I didn't do it", Lisa tells Bart that now "you can go back to just being you, instead of a one-dimensional character with a silly catchphrase". The episode ends with a self-referential scene in which several characters say their catchphrases, including the Simpsons, Ned Flanders, Nelson Muntz, Mr. Burns and Barney Gumble. The episode "Behind the Laughter" was a parody of the music documentary series "Behind the Music", which was popular during the episode's production. It tells the fictional history of the Simpson family and how they got into show business; from their weak beginnings to their exceptional prosperity. A television show, a recording contract, a lot of awards, and countless wealth follow Homer's inadequate video "pilot". It took the writers a long time to conceptualize the show, as they were unsure whether to make Homer a filmmaker or make the characters unaware they were being filmed. The writers had particular fun writing over the top, melodramatic lines "tortured metaphors," many of which were penned by producer David Mirkin. Part of the imitating of "Behind the Music" was using the "corny, stock interstitial footage to amp up the drama of the situation". In the clip show "The Simpsons 138th Episode Spectacular", the entire setup of Troy McClure presenting the episode is a parody of the practice by live-action series to produce clip shows in general. The parody was done by celebrating a completely random milestone and by making exaggerated use of the conventions of traditional highlight shows, such as a grand introduction and relentlessly showbizzy host. Considered a spoof of television clip shows, the episode is seen drawing attention to prevailing televisual conventions and reminds viewers that "The Simpsons" itself participates actively in that same cultural legacy. Simone Knox referred to it in her article "Reading the Ungraspable Double-Codedness of "The Simpsons"" as not simply a clip show, "but a ‘clip show’ that looks at the series with a sense of hyper-self-consciousness about its own textuality". Since "Gump Roast", there have not been any more clip shows. The show now instead produces episodes with three adaptations of existing stories for each act, called "trilogy episodes", rendering a clip show unnecessary.