My grown-up niece came to stay with me and I peeked on her masturbating in the bath. That night, when everyone was asleep and I was about to take a bath, my niece came in and said, "I still haven't forgotten about the prank you played with me in the bath a long time ago," and started to take off her clothes. It had been a while since we had taken a bath together, and she grabbed my hard cock and said, "You're not a kid anymore, so we can do more naughty things." We Mami and pulled her hard nipples, ran our fingers through her slit and enjoyed the slippery feeling, and our washing turned into touching, and my hard cock slipped into her slit.