04/19/2012 04:36 pm ET

'South Park' Goes Live Action In 'I Should Have Never Gone Ziplining' Episode (VIDEO)

In the 15 years that "South Park" has been on the air, its four main characters have made us laugh through some of the most disgusting, depraved plot lines on television. So what happens when you take away the buffer of animation?

On this week's episode, a parody of Animal Planet's highly dramatic "I Shouldn't Be Alive" series entitled,"I Should Have Never Gone Ziplining," the boys find themselves hopelessly trapped in a slew of outdoor tourist group activities. Ripping the Animal Planet show's graphic reenactments, the boys' illness-stricken journey on a boat tour is made even grittier with the addition of live actors playing Stan, Kyle, Kenny and Cartman.

What happens on the boat is by no means the grossest thing "South Park" has ever done (warning: there is some gratuitous fake diarrhea hose use) but when the boys are portrayed as more than just talking geometric shapes, their usual potty humor becomes even more hilariously disturbing.

Check out both live-action parts above and below (and don't say we didn't warn you about the diarrhea).

WATCH: Part two