"It is the idea that it's a movie in a movie. So I did it"

Penelope Spheeris is referring to her innovative choice to make a film within a motion picture. This is a strategy used in filmmaking to develop a story within a story. By doing this, Spheeris has the ability to check out various styles and ideas that might not be possible in a conventional narrative. It likewise allows her to produce a distinct visual experience for the audience. By making a movie within a motion picture, Spheeris is able to develop a more complex and layered story that can be analyzed in different ways. This method likewise enables her to check out different genres and styles of filmmaking. By making a motion picture within a motion picture, Spheeris is able to create a special and intriguing experience for the audience.