Continuity mistake: In the cartoon series, Stan's house has a cellar at the side, but throughout the film, no cellar is visible.
PadzterContinuity mistake: Operation "Human Shield" is supposed to "guard the tanks and planes too", and some of the black soldiers are tied to them. But once Chef jumps out of the way and says "Operation Human Shield my ass.." The others have miraculously been untied. (01:08:25)
Continuity mistake: When Satan says "I guess I'm destined to live in hell, alone", there is nothing on the rock in front of him. A few seconds later, Mr. Hat appears. (01:14:15)
Continuity mistake: When Saddam enters the room with a suitcase, Satan is sitting on a sofa and Saddam comes and sits next to him. Between shots, Satan's legs go from being bent outwards to being bent inwards. (00:40:30)
Hamster
Deliberate mistake: When Big Gay Al sings his song, he sits at the edge of the stage. In a wideshot the soldiers are just watching, yet in a closeup they're all waving lighters. (00:59:25)
Hamster
Continuity mistake: When Satan and Saddam are talking, Satan climbs into bed with Saddam and Saddam says "I love you." Between two shots the bedcovers jump up and cover more of Satan's body. (00:37:30)
Hamster
Continuity mistake: Mr. Hat is taken to Hell by Satan, yet just a few moments later, he appears back on Mr. Garrisons hand. (01:14:20 - 01:16:20)
Padzter
Continuity mistake: When Mr. Garrison makes the sexist remark, and Greg comments on this, he is sitting next to Wendy. However he then disappears. (00:26:10)
Ssiscool

Continuity mistake: When Mr. Mackey is making the announcement that T+P shirts are banned, we see Wendy and Greg sat a table, with Token sat above Wendy. However when the kids run out, Token has disappeared. (00:12:05)
Ssiscool

Continuity mistake: When we see Chef from the side of his station he is holding up a ladle. Camera switches to the front and the ladle is gone. (00:11:25)
Ssiscool

Continuity mistake: When we see the boys lining up for lunch the first time, we see Kyle at the front and there is no-one in front of him. Camera changes to a closeup and you can see the back of another boy's head that wasn't there before. (00:11:05)
Ssiscool
Continuity mistake: On the ice at the start we see Butters with his arms outstretched in a close up. Camera cuts to a wide shot and his arms are now at his side. (00:07:05)
Ssiscool
Continuity mistake: When skating on the ice we see Token in the centre of the lake in an overhead shot. However, the camera does an instant cut to the front and Bebe, who was on the side of the lake, now passes him. (00:07:00)
Ssiscool

Continuity mistake: Stan has nothing in his hand when he goes into Tom' Rhinoplasty, however when he walks in he has the advert for the new film. (00:01:10)
Ssiscool

Continuity mistake: The way Stan holds the newspaper advert in Tom's Rhinoplasty changes from the top the the side instantly. (00:01:15)
Ssiscool

Continuity mistake: When the General asks the first battalion to raise their hands they raise their left (screen right). Camera changes to Chef and their raised hands have changed. (00:46:10)
Ssiscool
Continuity mistake: When Satan asks to talk to Saddam, Saddam has his hand on Satan's arm. Camera changes and now it's not. (00:28:30)
Ssiscool

Continuity mistake: On the chat show, we see Brooke Shields run away when MAC storms on and she is behind Terrance. Camera cuts to a close up and Brooke has vanished instantly. (00:23:40)
Ssiscool

Continuity mistake: During Blame Canada we see MAC hang a banner over the cinema saying 'Censored Version One Minute Long MPAA Approved' However later in the song, the banner simply says ' Censored Version'. (00:21:30)
Ssiscool

Continuity mistake: When we see the 2 rows of kids at the start of the rehab song, Kyle is in the front row. A few seconds later when they all stand up he is in the second row. (00:15:20)
Ssiscool
Answer: It's a standard blues riff, used in many different songs.