A concerned large-breasted nanny worries about her virgin son who only knows masturbation and decides to provide sexual education. The sensitive penis, stimulated by the mother's gentle blowjob and paizuri, repeatedly ejaculates prematurely. Worried about her son's excessive premature ejaculation, the mother, with a desperate resolve, mounts her son's penis into her dripping vagina and slowly moves her hips to prevent him from ejaculating. The son clenches his teeth and desperately tries to hold back his ejaculation, but the pleasure is too intense, and he accidentally ejaculates inside. The thrilling pleasure of slow piston sex, which even her husband has never experienced, causes the mother's rationality to be lost.
