Random Episodes
Going Native
When Butters starts acting out at school, his parents realize it's time to tell him why he's not like all of the other kids. It will be a difficult trip for a young boy to make alone so Butters choose... 
Put it Down
When Tweek is caught in the middle of a petty conflict, it drives his relationship with Craig to the brink. 
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). 