I have never watched South Park but hear it's good. Do you watch it?
Yes I love South Park it features the characters Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick
I believe it's satire, kind of like the Simpsons. Did it first air in the 90s?
Yes it first aired in the 1990's.  Originally Cartman was named Kenny.
Oh, ok. It's based in Colorado is it not? I have some vague recollection of that.
South Park
South Park is an American adult animated sitcom created by Trey Parker and Matt Stone and developed by Brian Graden for the Comedy Central television network. The show revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their exploits in and around the titular Colorado town. Much like "The Simpsons", "South Park" uses a very large ensemble cast of recurring characters. It became infamous for its profanity and dark, surreal humor that satirizes a wide range of topics
1992 student film screening. The film features four children very similar in appearance to three of the four main characters of "South Park", including a character resembling Eric Cartman but called "Kenny", a hooded boy resembling Kenny McCormick (who remains unnamed) and two other boys similar in appearance and voice to Stan Marsh and Kyle Broflovski.
This film is later referenced in a season six "South Park" episode entitled "Simpsons Already Did It". In this episode, Stan, Kyle, and Tweek are