South Park - It Hits the Fan is the 66th episode of the animated series South Park, and the first-broadcast episode of the fifth season - it was originally broadcast on June 20, 2001.
When a crime drama on TV airs an episode using a curse word uncensored, the town popularizes the word, which causes people to die from the plague and also a demonic dragon called Geldon was awakened by using the specific curse word.
South Park Spoiler Alert!
(The complete plot for this South Park Episode)
Kyle has tickets to go to The Lion King on Stage, but Cartman tells him that the HBC crime show Cop Drama is going to use the word "sh*t" uncensored. The broadcast of the show leads to widespread acceptance of the word, even in schools, causing people to use it constantly, in casual and often out of context during conversations. Furthermore, Ms. Choksondik is forced to clarify the acceptable context of the word — as a noun or adjective meaning bad, or as an exclamation of disappointment, the word is acceptable, but as a noun or adjective referring to feces, it is apparently unacceptable—thoroughly confusing the children. A strange illness that causes people to spew up their intestines and die suddenly rises in South Park, so action is taken.Our boys ask Chef to take them into the HBC Head Office to sort it out. Research proves that the word is actually a literal "cursed word," and its constant use has caused a resurgence of the Black Death. A special live event, "Must Sh1t TV", in which episodes of existing shows are taped live with almost every word of dialogue replaced with the word "sh*t," goes ahead anyway until the Knights of Standards and Practices enter the studio and begin killing the actors. In a fit of rage for the Knights trying to stop his TV special, the head of HBC repeats the word "sh*t" rapidly, causing a demonic dragon to awake. After the dragon murders several on the set, Kyle destroys it with an ancient magical rune stone belonging to a knight in the mystical Order of Standards and Practices. The moral of the story is not that saying "sh*t" in itself is wrong but saying it in excess leads to boredom with the word. Cartman tells everyone to watch their language, which Kyle and Stan agree on. The episode ends with Kenny spewing up his intestines and dying; Stan almost says "Oh sh*t!" once more but replaces it with "p00p".