have to behave stupidly and raunchily. Once you've dealt "humorously" with pedophilia and abortion in the same episode, as "South Park" did (ITAL) last (ITAL) season, what to do next? Why, you deal "humorously" with murder. But that's not the end of it. Next week will have to be even more offensive, or "South Park" will die. That's life in the shock business, where neither producers nor networks nor sponsors give a damn how badly they're warping children, so long as they trigger those ratings, those all-important ratings.