Random Episodes
Hummels & Heroin
Beloved entertainers are being cut down in their prime due to massive overdoses of opiates. Stan is about to be exposed as the source of the illegal drugs. 
Imaginationland Episode II
Stan and Kyle are being held in the Pentagon until they tell the government how they got into Imaginationland. Meanwhile, Cartman goes to great lengths to get Kyle to suck his balls after an agreement... 
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). 