Episode: "Night of the Living Homeless” (s11e7)
Original Air Date: April 18, 2007

The homeless of South Park flood the streets begging for change, triggering an immediate zombie apocalypse game scenario for Stan, the boys, and their families. Like every zombie game, there's the moral quandary of killing a beloved human turned homeless, the sacrifice of the selfless individual to become homeless for the good of the group, and shotgun headshots. What zombie games ignore is the simple solution that the boys concoct to save South Park from the infected horde. They lead the mindless creatures to California.