Some info and a short description of this South Park episode on South Park Zone:
South Park - Toilet Paper is the 99th episode of the Comedy Central series South Park. It originally aired on April 2, 2003. It is a parody of the movie Silence of the Lambs.
Our boys being punished to stay after school, they take revenge by toilet papering the art teacher Mrs. Dreibel's house during the night.
Kyle showing sings of remorse, Cartman decides to eliminate the risk of Kyle confessing by taking matters into his own hands. He takes Kyle on a boat ride on Stark's Pond and begins to beat him with whiffle bat., while a music similar to the Godfather theme plays in the background.
Each of the boys ends up with two weeks' detention, except for Cartman, who gets only one for "being brave"
South Park Spoiler Alert!
(The complete plot for this South Park Episode)
Mrs. Dreibel, the art teacher, gives the boys detention for making a phallus out of clay in art class. Infuriated, they take revenge by toilet papering her house that night. Kyle is horrified to discover that she has kids and soon regrets the deed, later having nightmares about it. The next day, the boys are called to the counsellor's office, and Cartman comes up with a ridiculously elaborate alibi. With Kyle struggling to comprehend the details of this convoluted story, Cartman grows concerned that he may confess. Cartman decides to eliminate the risk of Kyle confessing by taking matters into his own hands. He takes Kyle on a boat ride on Stark's Pond and begins to beat him with a wiffle bat, which was the only weapon he could afford. Kyle, nevertheless, is so guilt-ridden that he does not defend himself.Officer Barbrady absurdly exaggerates the weight of the crime and begins an investigation, but is unable to come up with any solid leads. He seeks help from Josh, a convicted toilet-paperer, who is serving a three-week sentence in Park County Juvenile Hall for toilet papering over 600 houses in less than a year. After several interviews, during which Josh applies psychological pressure on Barbrady, he comes a little closer to solving the case. Later, Barbrady forces a confession out of Butters after injecting him with sodium pentothal and interrogating him for over forty hours, but Butters' parents, furious, arrive to absolve him and ground him for confessing (yet again) to a crime that he did not commit. After seeing Butters get in trouble for their actions, Stan and Kenny are finally convinced that they ought to confess. Stan tells Cartman that, if he has a conscience, he will do the same. Cartman, however, is completely oblivious to the concept of "feeling bad for other people" and is utterly bewildered at his friends' reasoning.
The next morning, Barbrady brings Josh along with him to Principal Victoria's office, but before he can speak, Mr. Mackey announces that the true toilet paperer has already confessed. Just then, Stan, Kyle and Kenny rush into the office, only to find out that it is Cartman, having obviously done it in a bid to secure a better deal for himself: each of the boys ends up with two-week detention, except for Cartman, who gets only one for "being brave" - Cartman considered it a Pyrrhic victory, as he later laments having to spend one week of detention. Kyle is outraged and he finds this unfair because he was supposed to confess and do the right thing not Cartman. Josh manages to trick the police and flee. At the conclusion of the episode, he calls Officer Barbrady and thanks him for enabling his escape. Despite Barbrady's pleas—"Josh, you have to go back to Juvenile Hall: you only have a three-week sentence!"—Josh puts down the phone and, armed with bags of toilet paper, slowly approaches the White House as sinister music plays in the background.