One day, a fifty-year-old mother with a voluptuous body was loosening her lack of exercise with yoga. When her son returned home, he was abnormally excited by the huge mature buttocks thrust in front of him and pressed his erect penis into the crack, calling it a massage. The mother, feeling the hard stimulation in her vagina, let out a gasp. The son, lusting, greedily devoured the soft and thick fifty-year-old body. Confused but also feeling the mother's buttocks trembling, she soon began to desire her son's penis and thrust out her white giant buttocks!