Rick and Morty was created by Justin Roiland and Dan Harmon. The duo first met at Channel 101, a non-profit monthly short film festival in Los Angeles co-founded by Harmon.[10] At Channel 101, participants submit a short film in the format of a pilot, and a live audience decides which pilots continue as a series.

Roiland, then a producer on reality programming, began submitting content to the festival a year after its launch, in 2004. His pilots typically consisted of shock value—"sick and twisted" elements that received a confused reaction from the audience.[10] Nevertheless, Harmon took a liking to his humor and the two began collaborating.

In 2006, Roiland was fired from working on a television series he regarded as intensely creatively stifling, and funneled his creative energies into creating a webisode for Channel 101.

The result was The Real Animated Adventures of Doc and Mharti, an animated short starring parodies of Doc Brown and Marty McFly, characters from the Back to the Future film trilogy.

           [11] In the short, which Harmon would dub "a bastardization, a pornographic vandalization", Doc Smith urges Mharti that the solution to all of his problems is to give him oral sex

.[12] The audience reacted to it wildly, and Roiland began creating more shorts involving the characters, which soon evolved beyond his original intentions and their obvious origin within the film from which it was culled

https://en.wikipedia.org/wiki/Rick_and_Morty