South Park, Season 10

[Mr. Mackey addresses the students over the PA system]

Mr. Mackey:
Attention students. Apparently Clyde could not have been the one who crapped in the urinal, because Clyde had a colostomy at age five, m'kay? Now whoever did this unspeakable act is still at large. The boys' bathroom is closed until further notice. 'Cause one of you thought it would be a good idea...to pull down your pants, m'kay... [cut to the hall; all the students there are listening] ...hover your butt cheeks over the urinal... and squeeze out a chocolate hot dog, m'kay? [the students laugh] Oh, you think that's funny, huh?! [cut back to Mr. Mackey] Let me assure you, there is nothing funny...about going up to a nice, clean, unsuspecting urinal... [cut to the gym; the students there have stopped practicing basketball to listen] ...m'kay, dropping your pants and then...turning around...squatting over that urinal...m'kay, maybe, maybe pulling your butt cheeks apart with your hands, m'kay...and then laying out a big fudge dragon for all the world to see. [the gym students laugh] Oh yeah, that's REAL funny! [cut back to Mr. Mackey as he slams the mic down in anger] I'm gonna catch this son of a bitch if it's the last thing I do, m'kay?!