" Best Friends Forever " revolves around the Terri Schiavo case , and originally aired in the midst of the controversy . In the DVD commentary for the episode , Trey Parker and Matt Stone called " Best Friends Forever " a " very last minute episode " . They already had the idea for " The Losing Edge " and were about to start work on it . However , the Terri Schiavo case had just entered a " media frenzy " so Parker and Stone felt as though they needed to do an episode about it ; they saw it as the biggest news story since the September 11 attacks . Parker and Stone worked quickly to come up with ideas and felt that they had the structure of the episode finished within 30 minutes
September 11 attacks
September 11 attacks
Best Friends Forever (South Park)