A Mother's Courage (found "South Park" web animation; 1998)
From The Lost Media Wiki
A Mother's Courage was an online South Park animation from Halloween of 1998, created using the now defunct WebProducer by Media Conveyor. The cartoon is about Kyle, Stan and Kenny carving a pumpkin to look like Lou Diamond Phillips, while Cartman eats an entire bag of candy corn, leading him to puke. It features the voices of Trey Parker and Matt Stone. It was later taken down and redone in comic form. The short was forgotten about until it was uploaded by YouTube user Mannis.
