"South Park" Spontaneous Combustion (TV Episode 1999) - Trey Parker as Stan Marsh, Eric Cartman, Clerk, Man in Crowd #1, Officer Barbrady, Man in Crowd #2, Randy Marsh, Randy's Fan #1, Randy's Fan #2, Mr. Garrison, Jerry, Man Playing Stan, Man Playing Cartman, Randy's Fan #3, Nobel Prize Announcer, Whoopi Goldberg, Nick Nolte, Dr. Mephesto, Cheesy Poofs Commercial, Man in Mob #1, Man in Mob #3, Man in Mob #5, Tom the News Reader, Bob Dole, Woman #1, Woman #2, Singer

[episode running gag]

Mayor : Marsh, I'm not asking you, I'm telling you! Find the cause of spontaneous combustion, or else!

Randy Marsh : Or else what?

Mayor : Exactly!
Randy Marsh : If you never fart, you combust, but if you always fart, you deplete the ozone. So, we must fart only at appropriate times or when it's really, really funny.

See also