Random Episodes
Super Fun Time
While the kids are on an educational field trip to a living museum, Cartman makes Butters sneak away from the class to go to the amusement center located next door. 
HUMANCENTiPAD
Kyle is intimately involved in the development of a revolutionary new product that is about to be launched by Apple. Meanwhile, Cartman does not even have a regular iPad yet. He blames his mother. 
World War Zimmerman
This episode parodies the movie "World War Z".
In this South Park episode, Cartman is deeply disturbed by a person, which he considers to be a threat to all humanity (and it is not Kyle). 