During a visit to my hometown, my mother asked me to clean my unemployed sister's room. When I looked in, I saw her in a shameful state, masturbating like crazy, and her masturbation skills, honed over the years, were like an expert's. When I entered the room, an incredible lewd smell was in the air, and I couldn't help but get a full erection! Noticing my erection, my sister frantically took off my pants and said, "Show me!", and enthusiastically took the cock she hadn't had in 10 years into her mouth. Even though we are brother and sister, she got her dried-fish pussy soaking wet and indulged in pleasure. The libido of a widow is astounding, and while we were at her parents' house, she treated me like a meat vibrator...