Trivia / South Park S10 E9 "The Mystery of the Urinal Deuce"

• What Could Have Been: The episode was originally going to just be about the Hardly Boys trying to solve 9/11. While Trey and Matt thought this was really funny by itself, they added a brief scene where Mr. Mackey was furious about a urinal deuce. Mackey’s reactions were so hilarious to them that they took out some of the 9/11 plot in favor of more urinal stuff.