A mother in her fifties was given a massager as a birthday present by her son, and she was moved by her son's kindness and decided to use it right away. The mother can't help but have lewd fantasies due to just the right amount of vibration, and ends up masturbating by applying it to her breasts and crotch. The son, who has seen his mother's white, soft body trembling and ascending to heaven, loses himself in the voluptuous naked body in front of him and sucks on it. A 50-year-old mother enjoys the forbidden act with her son by making her big breasts and huge ass bounce lewdly.