I have a beautiful older sister, but she keeps interfering in my private affairs. To top it off, she came into the bath while I was taking a bath... and started washing my body! While I was washing my body, she noticed my foreskin and said, "You have to wash it properly! You won't be popular with girls!" She pulled back the foreskin and tried to wash it gently and thoroughly! She was already beautiful, but when she touched me like that, my dick got hard in an instant and became an adult erection.