Mr. Mackey tries to teach the fourth grade boys about a male anatomy and female anatomy and the mechanics of sexual intercourse. Not having had sex since he was 19, Mr. Mackey cannot teach the boys anything of use. Ms. Choksondik, intending to scare the girls into safe sex, spends 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.