I have a very beautiful older sister who is much older than me, but she interferes even in my private matters. To make matters worse, she comes into the bathroom while I'm bathing... and washes my body! While washing me, she notices my phimotic cock and says, "You have to wash it properly! You won't be popular with girls!" and tries to peel back the skin to wash it clean, gently and thoroughly!! She's already beautiful, but when she touches me like that, my cock quickly hardens into a full adult erection...