This happened today and in fact I am finishing as I type this.
I am between girfriends and my only release for a while now has been my hand. Even more recently, I have been so busy at work that I haven't had the inclination or time to get a good one off.
I went to the bathroom at work late this morning and when I was in the stall I started thinking about how I really needed a good, hour long wank sometime soon. Everything lately has been getting me hard and I have not been in a place where I could relieve myself. Well, of course you start thinking about it and up goes my dick standing at full attention. I figured why the heck not and started to jerk off in the stall, but a few people came in and I just couldn't finish.
I had to leave early to get home for something and caught an early commuter bus. It was virtually empty and I sat most of the way back. There were only two people behind me and no one directly around me. Once we got on the highway, I decided, hey, why not here? No one can see. So I opened my zipper, whipped it out, and after two strokes, I was completely hard. I spit in my hand and started to pump gently at first and then harder and harder. I was going pretty good, but constantly looking out the window to see if a truck driver could see me or if the people sitting behind me noticed. Nobody seemed to. I kept going for about 40 minutes, but couldn't make myself cum. We went through a few toll booths and I had to quickly cover up not sure if they had a camera or anything. Then we got to the first of what would then be many local stops and people started to get on and I had to stop without relief.
Well, I just got home, I got on my PC here (my favorite place to wank is while online watching porno movie snipits and download HC porn, and I am now rock hard, pleasing myself to no end. Wait a minute ...
There, oh what a cum! All over the floor and keyboard. Finally a great day!