Sister learns how to have sex with her brother to become more experienced

A young girl confessed to her boyfriend that she knew nothing about sex and asked him to teach her something. The guy tried to put everything into words, but realized that it was easier to fuck his sister once himself so she would understand everything. He barely talked the shy girl into sexual intimacy, but she never agreed to take off her bra. Forgetting the matter, the boy fondled the maiden, and then finally put her on his cock. First, the brother passionately fucked the sister in the riding position, and then gave her a brief lecture on blowjobs. Toward the end the cutie finally relaxed, so she just lay on her back and got a hard fuck. Thus, with the help of her brother, she learned a few new positions, and at the same time had an orgasm and a cum on her tummy.