South Park has been sued many times. A famous case vs Tom Cruise, in which their defense was that they make fun of everyone, so it's not libel.

> It's pretty amazing that South Park hasn't been sued (or lost?)

https://en.wikipedia.org/wiki/Hustler_Magazine_v._Falwell

tl;dr:

> Hustler Magazine, Inc. v. Falwell, 485 U.S. 46 (1988), is a landmark decision by the Supreme Court of the United States in which the Court held that parodies of public figures, even those intending to cause emotional distress, are protected by the First and Fourteenth Amendments to the U.S. Constitution.

I am in no way a public figure, and will likely never be one, but if the South Park writers decided to go after me my strategy would be to hunker down and just hope the episode isn’t good.