It's not uncommon to watch an episode of 'South Park' and wonder, how the heck did they get away with that? What would it take for the show to get censored? Well, it happens every so often, and Sunday, the biggest, longest-running cartoon franchise on TV showed 'South Park' its support.

In the opening credits of last night's 'Simpsons,' Bart wrote "South Park -- We'd stand beside you if we weren't so scared" on the chalkboard (check out the Hollywood Reporter's Live Feed blog for the pic). 'The Simpsons' has taken its share of swipes at political and cultural targets in the past. So what could make Matt Groening and company so scared?