Kyle: Cartman, you have such a fat ass, that when you walk down the street people go, "God, dammit thats a big fat ass!'
Cartman: They do not!
Random guy: God Dammit, thats a big fat ass!
The creators of the show, Matt Stone and Trey Parker, based the Stan Marsh and Kyle Brosfloski characters after themselves (Stan being Parker and Kyle being Stone.) The Eric Cartman character was partly based on Archie Bunker.