I have been masturbating regularly since I was eleven. One of my best masturbation experiences ever, happened when I was fourteen. I had just finished my shower and I was feeling really horny. So when I got up to my room I started to play with my cock. I was completely naked and had probably been masturbating for about 20 minutes when I heard someone coming toward my room. I was feeling too good to stop masturbating and all of a sudden my sister came into my room. I felt somewhat embarrassed, but being there completely naked with a girl watching was incredibly arousing at the same time. My sister was 15 years old at the time and was very cute with well-developed breasts. The excitement was just too much and I started having the most powerful orgasm of my life. My penis shot out at least five ropes of cum. It seemed like it would never end.
I had no idea how my sister would react to what she just saw. Instead of getting all upset she said that she had been masturbating for years and had always wanted to see a guy cum. She then asked if I wanted to see how she masturbates. I of course said yes. My sister was starting to make me really horny again and I could not help but get another erection.
So as my sister started to take off her clothes I started to rub my hard penis again. I never saw a naked girl before and my sister was gorgeous. She had nice round breasts with pink puffy nipples. The best part was her shaved pussy. It was the most beautiful thing I ever saw in my life. And then my sister and I started to masturbate together. We both had incredible orgasms.
I hope everyone enjoyed the story of my best masturbation experience. I have to finish off and masturbate now. My cock is so hard from thinking about that day.