Insecurity

South Park Zone
South Park Season 16 - Episode 1610 - Insecurity
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South Park Zone - Season 16 - Episode 1610 - Insecurity
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South Park - Insecurity is the tenth episode of the sixteenth season of the American animated sitcom South Park, and the 233rd episode of the series overall. It aired on Comedy Central in the United States on October 10, 2012. and like most of all South Park episodes it is rated  TV-MA L (Mature audience/May be unsuitable for audiences under 17 years of age).
The man who visits all the homes in South Park every day is now under suspicion. The luxury of having packages delivered to your doorstep is suddenly a threat to every family in the neighborhood. Cartman takes matters into his own hands and signs up for a home security system.

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(The complete plot for this South Park Episode)

The episode starts with Gerald and Sheila (Stan's parents) RP in the bedroom, with Gerald dressed as a UPS man. Without them knowing, Ike sees them and ends up crying for most of the next day, not realizing the UPS man was in fact Gerald. Kyle asks what is wrong, and Ike draws a stick figure picture of a UPS man having sex with Sheila.
Kyle confides in Stan, Kenny and Cartman, who advise him to confront Sheila about it. Randy overhears the conversation and tells the other males of South Park. After listening to a story from a shady old man in Skeeter's Bar and Cocktails, who compares it to a milkman who used to have sex with people's wives while doing deliveries and calling it "the price to pay for convenience", they all grow paranoid of the UPS delivery men having affairs with all their wives, and begin spying on the delivery men. Randy notes that Sharon could not remember what her Amazon package contained upon its delivery, and signs for it himself to avoid contact between the UPS man and Sharon.
People start buying excessive home security measures, that Cartman in particular finds frustrating because the man who rings up upon an alarm sounding is useless, so he tests it by hiring a burglar to break in and rape his mother. By the time any appreciable response was achieved, it was far too late.
Despite the extra security, the paranoia grows and the men consult the shady bar patron again, who advises them to "kill the milkman". Donning Bane masks, they drive the UPS Man to a secure storage facility and severely beat him. This causes further security concerns, due to the presence of seven Banes as opposed to one. Everyone buys an improved security system, "InSecurity", that detects fear levels and goes off if they get too high. Upon Cartman flouting this to Kyle, who he is convinced is repeatedly robbing his house, he accidentally sets his InSecurity alarm off upon Kyle shooting down one of Cartman's jabs at his religion by telling him Judaism is growing.
The UPS man, on return from hospital, continues his deliveries, eventually resulting in his van being blown up by Stephen Stotch while Kyle attempts to get his mother to confess to having an affair. The UPS Man then commits suicide due to being so scared. Upon investigation of the house, the police, called by the UPS man's InSecurity alarm, find Gerald's UPS uniform, and Gerald hurriedly explains that he desperately needed to spice his sex life up. This sets off everybody's InSecurity alarms.
Cartman, fed up with the false alarms and poor service, approaches the home security man while wearing a Bane mask and holding a gun, warning him he should have respected his "authoritah".