It was daaaamn fun.
I had never tried it, so I wanted to try something new, skinny dip and jack off in the pool. It was around 5:00 PM, and since it was summertime, the sun was still up. Everyone else was inside the house too, they had swum enough for the day. I pulled down my swim trunks in the water, and started at it. All I wanted was a quickie but I got far from that.
After about 30 minutes of jacking, my cock was huge, nearly ten inches. I kept on going, and then it was night time, in what seemed just minutes. I didn't stop and just kept on jacking. I knew no one from inside the house could see me, because the lights were on, and from experience, I knew that in between a window, the lighter side can never see the darker side.
I started using both hands and as time went by, I got bolder and bolder. I took off my trunks all the way, and started moaning. All I wanted to do was cum, but I just couldn't seem to do it. Finally, after what seemed hours this time, I came hard and long. My legs shook as I went back to get my trunks. I put them on, and walked back in the house. It was 12:30! That was by far the longest I have ever gone, but I was still horny, so I ran back outside and jumped in the pool.