The guy says that since they were teenagers he and his sister liked to explore each other's bodies and experiment. With time and even after he got married he never stopped having sex with his sister. Now he, his wife and his sister live in their mother's house to share the expenses and take care of their ill mother. He says he's like in heaven. When his wife is working on the night shift, he spends the evenings watching TV, drinking beer and having his sister doing him a 30 minutes blowjob.