Continuity mistake: At the beginning when Cartman is showing the old women the hippies in the attic, there is a pair of boots and some other things behind them. It does two shots that show the things behind them, then in the last shot before they leave the attic, all the things are gone. (00:01:10 - 00:01:28)
Continuity mistake: When Garisson tries getting his balls back from Kyle, a scene is shown in which a man in a suit is singing, prior to the basketball game Kyle is allowed to play, because of his negroplasty. In the background are all the basketball players, including Kyle, who should be black now. However the shot shows him in his previous white form, in his old jersey. (00:18:15)
Continuity mistake: In the scene where we first see Kyle as a tall black kid, when Kyle's dad says " Come on Kyle we have to get going" And Kyle says "Alright dad", when kyle runs to his dad, we see his basketball jersey change from an orange 4 jersey to a blue "all state 4 Colorado" jersey. (00:14:20)
Continuity mistake: When Stan, Kyle and Kenny are going to Cartman's house to turn him back to normal and get surrounded by the Ginger Kids, Kyle is wearing his pyjamas with a coat over the top. But by the time he and Stan reach the barn to shelter from the attacking Ginger Kids, he's suddenly wearing his normal green trousers.