Yup, actually I just forgot, M&T have a cameo at 13 minutes drinking wine coolers. The president of Seagrams wanted a gag video to be made for a party in early 1996, and somebody internally recommended Trey Parker having seen the infamous "Spirit of Christmas" video (I've once heard that it was Brian Grazer, but I'm not sure), and he was hired to write and conceive it along with Matt. Needless to say, it wasn't something that the company would've liked to see made public, but Seagrams no longer owns Universal so who cares?