atmachine,

This is what I mean about South park slandering itself. I can't really speak for Family Guy ripping on South Park, though.

from "Cartoon Wars"

Gerald: [approaching in his pajamas] Which cartoon is it? What cartoon'll be so insensitive as to have Muhammad as a character?

Randy: Who do you think?! The cartoon that's always pushing buttons with their careless toilet humor! Family Guy!


In the actual epside, there's a pregnant pause after "toilet humor" and "Family Guy" making the joke an obvious shot at themselves.

taken from:

http://www.southparkstuff.com/