My childhood friend still innocently comes to my room to play... On days when she fights with her parents, she secretly comes to stay at my room. (Of course, I tell her parents that she secretly came to stay at my room.) One day, when I was treating her like a child, she said, "I'm amazing when I take off my clothes," and showed me her naked body! I'm embarrassed, but I was mesmerized by her beauty and got a full erection! When my childhood friend saw my fully erect penis, she got excited and said, "I've always liked you, big brother," and started touching my erect penis and getting horny! My childhood friend, who I thought was a child, came on top of me over and over again with a dirty grinding cowgirl position that put any adult to shame! And it felt so good that I came inside her over and over again!