My mother-in-law's humiliating posture, especially given her voluptuous, mature figure, made me erect. (Mary Tachibana, VENX-276)

He saw his wife's mother changing clothes. She was wearing a tight-fitting corrective bra, meant to prevent middle-age weight gain, and her beautiful, large breasts seemed about to burst out. The son-in-law couldn't imagine such a wanton body from her usual dignified appearance; he swallowed hard. He couldn't bring himself to do it. He tried his best to use his reason to forget, but the stimulating scene of her changing clothes made him unable to resist, and he assaulted his mother-in-law.