I suppose that I first became aware of sexuality when my cousin (four years older) came to visit for the summer. He was talk, dark and hansome with a rather nice dick. He was about 13 and I was about 9 as he showed me how he could masturbate to ejaculation. I was only able to sustain an erection at that point, but I was unable to ejaculate.
The first time I ejaculated was about two years later when I was still trying to emulate my cousin. That first orgasm brought me to my toes and I thought the end of my little friend was coming off!
Since that time I have had several experiences, some of which I will share with you. I was about 16 when an adult fellow (40ish) invited me into his house to view his Playboy collection. He also gave me some beer, and after I had become fully erect from the magazines, he unzipped my jeans and pulled my penis from my pants and began to lubricate it with vaseline. I came to an exquisite climax and offered to return the favor, but he became nervous and insisted that I leave.
The next significant encounter came several years later after I was married. I stopped into an adult arcade and was feeding quarters into a see-all movie. I became quite excited with what I was watching and took little note of the hole in the wall between my cubicle and the next one. Feeling the need for release, but knowing that I was secure in my liitle booth, I pulled my pants down and began to stroke my little friend. Just as I was nearing the point of no return, the guy who had been watching me from the next cubicle came in and engulfed my member with his mouth. He sucked furiously until I was quite spent. He left just as quickly as he had entered, and I have no idea who he was, but I will never be able to forget his kindness.