Even though it was over fifty years ago, I'm surprised that I can't seem to recall more details about an event that was such a benchmark in my sexual life. But, I just can't. I was fourteen-years-old or so at the time, and being in a Catholic family and attending a parochial school, I had absolutly no preparation for the physical changes ongoing in my body.
For the preceding few months I had been experiencing considerable new pleasure in touching and washing my penis, the inside of my legs, my scrotum, and even my anus. At night while on my back in bed, I had what I later learned was an erection. But I didn't actually stroke it at first, I didn't know about that yet. I'd just touch my penis, and feel it, and squeeze it, and let my bed clothes rub against it. I was a pajamas fellow at the time so my erect penis would jut out of the fly as I played with it.
The pleasant sensations I was experiencing grew stronger as the weeks passed. One night, perhaps after I'd actually stroked my erection a bit, I felt a sudden and somewhat familiar urge as if I needed to pee. The sensation built up stronger and stronger in me. When it got to the point that I felt I was going to wet myself, I jumped up and out of bed and headed to the nearby bathroom. It ws late, the house was dark, and my parents and my little sister were asleep.
I entered the bathroom and headed toward the toilet. Without any knowledge of what was happening to me, I had my first ejaculation while standing right there in the darkness.
I was surprised. I felt as though I'd peed on the floor, but the feeling was wonderful, like nothing I'd ever experienced while peeing. I closed the door and switched on the light. My penis was still pretty erect, but I could tell that the fluid dripping from the tip was not pee. It looked creamy, and it felt warm and slippery. I got down on my knees and found the same fluid on the linoleum floor. I cleaned myself up, and wiped up the floor, and went back to bed.
And, as they say, 'the rest is history'. I liked that first ejaculation so much that I continue to repeat it to this day.