Continuity mistake: Season 10, Episode 10 "Miss Teacher Bangs A Boy". In the scene where Cartman and his crew park the SUV outside the Hilton behind an orange car. In the next shot when Cartman and his crew are running in, the SUV is gone, only to return in the next scene.
Continuity mistake: Season 10, Episode 10: "Miss Teacher Bangs A Boy". When Miss Stephenson is drawing shapes on the blackboard, she draws a circle and a square only, and then is disrupted by Cartman. At the end of the scene where she is erasing the board, a triangle is now on the board with no time to draw it.