It's been a few years since I got married. I didn't think it was such a pain for me as a young man to have no sexual activity. At that time, my mother came to Tokyo after a trip. My mother looked fine after a long time and was happy to welcome her with her wife. A wife who recommends her mother to take a bath to heal the tiredness of a long trip. At that time, I happened to see my mother naked. There are places where my mother's body that I saw when I was a kid has collapsed, but it was so glossy that I was lustful for my mother's body. That night, I hugged my wife to control my hot crotch, but I was decided to make a decision. The next day, when my wife went shopping, my mother asked me about her problems. I hugged my wife to get rid of her hard erected crotch without getting a shite. My mother said no, but when I gently hugged me, she buried my face in my crotch and led me to launch. However, I decided to join with my mother because of an erection that did not heal even if I started.