Although I am now 55 I wanted to share my story of when I started to truly understand about sex. I was 13 and it was summer break between my seventh and eighth grade year of school. Many of my classmates spent most of our summer break at the local community pool. It was on one of those hot summer days at the pool that my eyes began to open on the wide world of sex. As luck would have it one of the girls in my class when getting up from her beach towel gave me an eye full. She unknowingly spread her legs wide open as she was getting up. I was seated in direct view as her legs spread open and her pussy formed a nice outline along her small bikini bottoms. My eyes were glued onto her spread open pussy for that brief moment in disbelief. As she walked to the pool I was still in shock at what I had seen, but I quickly realized that my cock was beginning to stiffen. Not totally understanding why I quickly headed for the cool pool water to hide my boner.
When I returned home at the end of the day and was changing in the bathroom I thought about what I had seen and my cock quickly got rock hard. I had heard guy on my bus tell some other boys that if you grab your cock with your hand and move it up and down it makes it feel good. I sat down on the toilet and grabbed hold and began to slowly move my hand up and down along my cock. My cock was about 4 inches long and had no hair at that time. It was not long before a tingling sensation was all over my cock and my cock tickled so much that I had to remove my hand. When I removed my hand my cock seemed to spasm and jump around on its own as if begging my hand to return and continue the up and down movement. I started again to stroke my cock up and down and this time as the sensation was building I did not remove my hand but continued to stroke faster and faster. Then it happened.... my cock erupted shooting a white creamy fluid from its head. I quickly jumped up from the toilet and put my left hand over the head of my cock as wave after wave of the white fluid continued to pump out. Once the stream stopped I grabbed toilet paper and began wiping all the white fluid from everywhere.
That night in bed I once again thought about how the girl's pussy spread open so nicely against her swimsuit and how my cock seemed to know exactly where it needed to head. As I thought of this I reach into my PJs and began to stroke my cock up and down as I had down earlier. Knowing what was going to happen this time I grabbed a handful of tissues as the sensation was building and quickly stuffed the tissues around the head of my cock as it erupted.