Hypocritical Humor: Cartman mocks Kenny for having herpes and saying it's a cold sore. At the end of the episode, after being treated for herpes, guess what Cartman says?
Long Title: At one point, the documentary is renamed "I Should Have Never Thought Horseback Riding Would Be Any Better Than Ziplining".
The Millstone: One same irritating camper is constantly halting the group, arriving half an hour late to the trip and constantly asking questions to the guides. The narration makes clear the boys are really holding themselves from telling this guy to go fuck himself.
Snap Back: Cartman's back to insulting Kyle for being Jewish.
Toilet Humor: Most of Cartman's scenes. Especially the live-action version of him crapping on the side of the boat.
What Could Possibly Go Wrong?: Stan says this line when he decides to go on a boat ride instead of enduring horseback riding any longer. This also cues the switchover to the dramatized footage.