Continuity mistake: When the kids are shown in Token's backyard, Kevin is not present. But a few seconds later, when they are each giving their opinions about the 'cursed' video, Kevin suddenly appears on the end of the line.
Continuity mistake: When Randy and Sharon go to Butters' house to obtain the video, they are in pyjamas. The next shot in his basement they are in casual clothes.
Continuity mistake: When Stan goes to see John Edwards, John Edwards's butler goes to get him. When the butler reappears (just before he pushes the buttons on the wall for the recorded voices), he reappears from the right of the archway. But John Edwards appears from the left of the archway when the voices are playing.
Continuity mistake: When Stan threatens to cut his hand off, you can see his wrist, but just right before he does it, his wrist disapears between his glove and jacket. If his wrist was showing, he couldn't have had his hand pulled inside his jacket and he obviously couldn't have done it while holding the meat cleaver.
Factual error: When Randy and Sharon are watching Lord of the Rings believing it is a porno, a male narration can be heard. In the actual movie, it was a female narration. (00:02:10)
Continuity mistake: In the very beginning, Butters walks in after Cartman, Kyle and Stan talk about replacing him. Butters and Cartman sit down and talk. Firstly, pay attention to the 'Cow Day' banner behind Cartman. After the camera goes from Cartman talking to Butters then back to Cartman, a letter S is now on the banner. It now reads 'Cow Days.' During the same sequence, look behind Butters. You can see Peter Panda on what looks like a toy box. After a few cuts from Cartman to Butters, now all of a sudden, Clyde Frog is next to Peter Panda on the box.