I recently watched Shocked on Trio, which was about Shockwave's ill-fated partnership with Trey Parker and Matt Stone. In 1999 Shockwave paid them $2 million to create short cartoons for their website, giving them full creative control. Matt & Trey came up with Princess, a cartoon about a cute puppy who witnesses lots of digusting things (like a husband whose wife gives him such a good blow-job his cum shoots her head right off). Shockwave never posted the episodes. Shocked gave clips of them... I've now discovered full versions of the first 2 episodes. They're sick... and hilarious. I love it!
Episode 1
Episode 2