South Park is a popular show, and video games love easter eggs. So it shouldn't be surprising that a number of games over the years have given nods to Trey Parker and Matt Stone's edgy show. If you're curious as to what those easter eggs are, well, DYKGaming took the liberty of compiling many of them into one video.
I still remember that Kenny moment in Fallout, back when I first played the game. Oh, memories.