Continuity: In Mackey's office, Cartman goes from getting off his chair, then sitting back on the chair, then he appears back off the chair.

Continuity: In the scene where Cartman is crying for his mother, the tattoo on Romper Stomper's face disappears, then comes back in the next scene.

Continuity: At first the sled race is supposed to be on Saturday, but late in the show it is on announced as happening on Thursday.

Factual error: The news anchor calls Cartman a hate crime suspect, but he had already been convicted, that makes him a hate crime convict.

Continuity: In the beginning when the boys come in to the living room, Kenny's brother is standing next to him. When it cuts, as Stan's grandpa enters, Kenny's brother is gone.

Continuity: When the boys are heading to see the quintuplets they approach a souvenir stand. In the wide shot all we can see are some CDs on the stand. In the close-up shot there are suddenly prize signs next to the CDs.

Continuity: When Kenny approaches his mum with a plunger, she asks, "What are you doing Kenny?" and she is wearing a "I'm with Stupid" t-shirt, but when Kenny tries to plunge her, the phrase "God Bless America" can be seen visible on her T-Shirt.

Audio problem: Just before Kenny explodes from eating all of Mr. Broflovski's antacid tablets, we hear Kyle, Stan and Cartman shout out Kenny's name. One problem - Cartman isn't in the room with them. He isn't even on their debate team.

Continuity: When the two geeks first fight about how many episodes there were for Star Trek the blonde guy says 72 and the other geek says 73, however later when the blonde geek is telling the boys about it, he says there are 73.

Continuity: Pocket carries Pip's luggage away, but a few shots later the luggage suddenly reappears beside them.

Revealing: As Stan and Kenny ask Chef whether Kenny is a prostitute, Kyle's mouth is rotated 90 degrees anti-clockwise.

Audio problem: The animated Christmas movie the boys are making is really "the Spirit of Christmas", the movie Trey Parker and Matt Stone made before South Park. The dialogue recorded by the boys is the same as in the original (with a few changes, but when the film is shown later it's the original speech from "The Spirit of Christmas". You can tell by the way the voices are done, and the tone of the voices.

Audio problem: After the news anchor says his first sentence, his voice changes, almost like a different person.

Audio problem: When the British knight beheads an executive in the office and gets shot through the glass the sounds of these three things aren't there.

Continuity: When Kyle and Stan show up to the Chili Con Carnival, we see in the background a woman with a little girl walking towards the right and Kyle and Stan at the left walking towards Eric's booth. When Kyle and Stan get there in the next shot, the woman and the girl are still walking, but they are in the same place as they were when the shot cut. This makes Kyle and Stan able to walk very fast apparently.

Continuity: When Cartman is eating his chili, he almost empties the bowl before he stops to talk, then the shot goes to Scott then back to Cartman and now the bowl is almost full again with a little chili sticking up above the brim.

Plot hole: When Scott Tenorman shows the other kids a video of Cartman doing his "piggy" act, the angle of the video shot shows that it could only have been taken from the place where Scott was standing when Cartman originally did it - but Scott is seen at that time to have no video camera or any way to have recorded this.

Factual error: Radiohead's recording studio is in Oxford, not London. (Although they might have been working in London that day, they wouldn't recieve fan mail there.).

Continuity: At the beginning of this episode, Cartman says Scott is a ninth grader, but later Kyle says he is an eighth grader.

Continuity: In the scenes where Cartman is miserable because of all the people in the park, when Kenny is on the roller coaster and he gets a pipe through his head, the kids who were with him change when the picture of him on the ride is shown.