"Proper Condom Use" is the seventh episode of the fifth season of the animated television series South Park, and the 72nd episode of the series overall. "Proper Condom Use" originally aired in the United States on August 1, 2001 on Comedy Central. In the episode, the fourth graders at South Park Elementary begin sexual education classes. However, the teachers do it in an improper way, leading the boys to wage war against the girls. Plot Cartman and Kenny learn from the 5th graders that "milking" a dog is possible, when it is in fact just stimulating the dog to the point of ejaculation which they call "red rocket" and "beating off" the dog. They show the act to Stan and Kyle, who are impressed. Stan performs the technique on his own dog Sparky in front of his parents and their friends during a book club meeting, for which he is grounded for ten months. Stan cannot understand why he is being punished, as his parents are too embarrassed to explain sexual stimulation to him and decide that the school should be responsible for teaching sex education. Mr. Mackey tries to teach the fourth grade boys about male and female anatomy and the mechanics of sexual intercourse, but, not having had sex since he was 19, Mr. Mackey cannot teach the boys anything of use. Ms. Choksondik, angered off sex after a boyfriend dumped her after a love making session ended poorly, intends to scare the girls into safe sex by spending her lesson teaching the girls about all the different types of STDs that they might catch if the boys are not wearing condoms, but does not mention that in order to catch these diseases, they would first need to have sex. The boys try talking to Chef, the only person who actually has had much sexual experience, but he (who was opposed to the sex ed class and wanted the children to keep their naivety) does not tell them anything. The girls become so terrified of the boys that upon being approached by them at lunch, they back away and scream in fright when they learn the boys aren't wearing condoms. Afraid they will spread a disease, the boys go to the pharmacy to purchase condoms. Hearing from the pharmacist that condoms were purchased, the school believes this is due to the students being sexually active. As a result,