My husband and I live together with our parents. - Recently, his father's drinking habit has worsened, and his relationship with his wife has begun to be a little strained. - Moreover, the night was also less, and my frustration was only building up. - One night, a light is leaking from my parent's bedroom, and when I look into it, my mother is holding her father's things in her mouth. - Her father ordered and joined her mother, but he walked out of the room withered and furious. - Then her mother pitifully comforted herself and cummed. - I regretted watching my parents' sex life at first, but I couldn't get an erection while watching her mother masturbate. - One day, when I looked for her mother, she was taking a nap. - No wife, no father. - I got excited when I remembered my mother's masturbation last time, and groped her sleeping mother's body. - When her mother woke up, she told me to stop, but I forced her to take off her clothes and sucked her crotch. - The overflowing honey made me even more excited, and when I pressed my mother's crotch, which was painfully erect, I inserted it at once. - Her mother was warm inside and I immediately fired. - However, my erection did not subside, and when I inserted it into my mother again, I hit it harder than before and threw out the climax liquid to my mother.