I'm 55 now and have been masturbating since I was 13 years old, and can clearly remember the first time I 'let fly' my semen.
It was during the school holidays in 1968, when I finally decided to try and see what this 'act' the other boys at school were talking about was all about. 'Wanking' wasn't the term used then, it was 'tossing off' or 'having a toss'.
The garage at the end of my garden was my den to some degree, where I kept my bike, and sports gear, and generally hung around when I was bored or wanted some peace and quiet. This day I was home alone and I had been getting erections for a long time, and knew it was pleasurable to touch myself, but a little painful to put my fingers or thumb on the head, it was very sensitive.
One Tuesday morning I had been looking at some pictures of women in various states of undress and was rock hard in my pants, and I decided to myself I would go down to the garage and rub myself and see if I could eventually make myself ejaculate.
I dropped my trousers and pants down to my ankles and began rubbing my cock which was always nice, but today it seemed even more intense. I quickly got a firm erection and my foreskin was just separating from the glans, and the intensity of it was very strong. I rubbed away not knowing how much pressure to apply or how long this would take me. The thoughts of those ladies breasts, and the image of them in front of me drove my pleasure higher and higher. I did not know at that time but I was reaching the plateau stage of masturbation, and all I knew was that I would not be stopping now, there had to be more to this than I had encountered before.
My penis was solid stiff now, and my hand was aching, but I knew I should continue, and soon I came to a point where my brain had taken over from my hand, and was controlling the action. My body was starting to go rigid, and I could feel changes taking place beneath my testicles. My anus was tightening, my balls were drawing upwards, and the feeling in my penis was undescribable. I could sense that something was about to happen, but I wasn't sure what it was. All control had gone, my hand was rubbing my stiff cock furiously and my knees were trembling, when suddenly I felt as if my head had exploded.
I looked down at my cock and as I did so a great white stream of semen spurted from the tip of my cock all over the floor in front of me. I could feel the pumping sensation deep in my cock forcing more semen up to the tip, which shot out over my clothing around my ankles, over my hand, and into a messy pool on the garage floor. My breathing was uncontrollable, I had difficulty standing, as the last shots of spunk were dribbling from my penis onto my hand. I had cum for the first time.
This was the start of a beautiful relationship with my penis.