This happened when I was ten.
This is about my first orgasm.
One day, at my old house, I was just sitting on the floor waching TV by myself, (My parents were at work) when I found this little vibrating back massager. I knew what it was, but I didn't understand how it could feel good. So with my usual curiosity, I turned it on and placed it against various places on my body. First, I put it against my back and it was so-so, nothing special. Then my neck, nothing, my leg, nothing. When I put it on my chest, I got a little more feeling from it that was alright. I moved on to my inner thigh area, it gave a little feeling, but nothing big. Then I had a crazy thought to put it on the genital area. At the time, I thought it was just for peeing. I looked around to make sure nobody was there.
Then I put it there on top of my clothes and a strange tingly feeling came over my body. I was a little freaked out, and for the sake of learning, I continued. I started to have an erection which I had before but didn't know why. Fascinated with this find, I still continued. My heart rate increased, I was breathing hard, and my body was trembling. I loved it! Then a very strong feeling built up and my muscles contracted in waves and my hips were slightly bucking, and then it hit! An amazing wave of pleasure spread through my entire body (mainly the genital area.) It was heaven. I couldn't help but let out small moans. I had never felt anything like it! Luckily, I had not hit puberty yet as my pants were still on. That would have been a nice clean up. So for a few minutes, I lay there, spent, catching my breath, completely relaxed, and fascinated over my new favorite body part! I learned how to masturbate a few weeks later. I will write about that next year. (Two or three weeks.)