South Park, Season 10

[Mr. Mackey interogates Clyde in his office]

Mr. Mackey:
Why, Clyde? Why did you do it?

Clyde:
I dunno. [looks away]

Mr. Mackey:
You got a whole school here, Clyde, m'kay? You got over three hundred people that need to use the boys' room, and you decide you're gonna be a comedian, m'kay, and pinch one off in the urinal, and leave it laying there for everyone to have to look at! [Clyde struggles to contain his laughter] M'kay, m'kay, you think it's funny, but nobody else does! They gotta walk in that bathroom and see your rancid dook propped up against the back of the urinal like a brown ragdoll! [Clyde bursts out laughing]

Principal Victoria:
Mr. Mackey, Clyde's parents are here.

Mr. Mackey:
M'kay, that's good! [to Clyde] Let's see what your mom and dad have to say about your little poop-scapade! [Roger and Betsy appear and enter his office] Come on in, please. I'm just trying to get your son to explain why he would drop a dookie in the urinal!