South Park's creators have rolled out a series of "making of" shorts about "Major Boobage," the drug-addled episode that pays homage to '80s triptastic cult film Heavy Metal.

In a series of shorts available at South Park Studios, the show's online headquarters, fans can get a closer look at the mechanics behind Kenny's cat-urine-induced psychedelic "cheesing" experiences from the episode, which aired in March.

The fourth and final "making of" installment, "Kenny's Hot Chick," debuted Wednesday. It features commentary by *South Park *creators Trey Parker and Matt Stone that details their approach to "Major Boobage." (Hint: It was an opportunity to overdose on boobs and violence.)

To mimic the hand-drawn feel of Heavy Metal in the episode, the South Park animation team used a combination of live-action and rotoscoping – similar to the techniques used in Richard Linklater's animated films Waking Life and A Scanner Darkly (a Philip K. Dick adaptation). In the series of four featurettes (available with and without commentary), the South Park creators explain the integration of live-action models with hand-drawn animation online.

While "Major Boobage" isn't the first South Park tribute episode – remember the anime-inspired "Chinpokomon" and the epic World of Warcraft spoof "Make Love, Not Warcraft"? – it was the first episode to sail past a million views at South Park Studios.

And it looks like this is only the tip of the Trans Am. "We've got more exclusive content coming out all summer, as we head to October and the new season of South Park," a press release on the site promises.

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