I'm not bragging or bullshitting when I say I'm well endowed, and even at an early age I had a much larger than average cock. I was still very much a virgin at the age of 15 and what little I knew of sex was lookiing at my uncles porn mags when I stayed over, which was two nights a week. It was looking through one of those mags in my uncles back yard, I began to masturbate, only to be discovered by his next door neighbor, an older man called Bill. He made a remark about the size of my cock and asked me if I'd ever put it to good use. Being young and very naive I asked him what he meant as I tried to put my boner away. He asked me if I'd lost my virginity yet, when I blushed and put my head down he knew I hadn't.

The following day, after my uncle had only just left for work, I saw Bill walking up drive. He knocked on the door and I answered it wearing only my shorts as the heat of the day was already buidling. The shorts did nothing to hide the large bulge inside them and when Bill looked down at my crotch, I involuntarilly started to get hard. His huge smile, what he did and his next question changed everything for me. Bill stepped into the doorway, put his hand onto my cock bulge and asked me if I wanted to find out what it was like to fuck a willing hole. My age, being a virgin, the hormones firing through me and my raging boner all decided it for me.

Sat on my uncles comfy chair, Bill lowered my shorts and looked on as my eight and half inch cock sprang forwards. With his eyes gleaming, I watched the fifty something year old man take my cock into his mouth. It was the start of my sexual teaching. He worked my cock in and out of his mouth, all the time masturbating it slowly. Then after only a few minutes I told him I was about to cum, thinking he'd let my cock slip out of his mouth. Bill had no plans on doing so, he let my cock explode in his mouth and with his cock sucking stopped, I began to thrust a little trying to extend the wonderful orgasm I was having.

Cum was leaking out of the sides his mouth, but Bill carried on sucking in my cock, as I held his head and began to fuck his mouth. My cock became real hard again and after only a couple more minutes of the sheer pleasure he was giving me, Bill abruptly stopped. Moving me away and standing up, he gripped the top of his shorts and pulled them down. Turned himself around and knelt on the chair. Looking back at me Bill said "Now to lose that cherry boy". Taking some of the cum from the side of his face I watched as Bill coated his asshole and pointed saying "Put it in here boy and don't stop fucking me until I cum".

I didn't know about STD's back then and I certainly hadn't heard of HIV or AIDS. So with my cock shining from Bills wet mouth, I moved upto Bill, put the head of my cock to his asshole and drove it hard into his rear passage. There I was a 15 year old kid fucking a man in his mid fifties and it felt fucking awsome. Probably because I'd already cum, my orgasm didn't rise for about twenty minutes and in that time Bill had me fucking him every which way.

I banging away at his asshole for about two minutes before I realised Bill wanted me to slow down. In my youthful enthusiasm I'd totally forgotten about how big my cock was and I gave Bill and his asshole no thought. Changing position so he was lay on his back on the chair, I slid my dick back into his ass. Bill told me to slowly fuck him with long slow strokes and build up the pace after he felt comfortable. Taking hold of my hand Bill place it around his rock hard cock shaft, the first cock other than my own I'd ever touched. Feeling his cock pulse between my fingers as I started to fuck him again, got me and my own cock even more horny, so I began to fuck him harder looking at his face as my dick drove all the way in. The joy on his face was very real and also very seductive to me.

Back to me fucking Bill from behind as he knelt down on the floor, his face pressed into the comfy chair. He asked me to fuck him harder, his asshole now somewhat used to my size. Almost lay on his broad back as I continued to fuck him, I reached around and took hold of his cock again. Wanking him as I liked to wank myself, I forcefully thrust my cock into his ass over and over again, making him moan loudly with pleasure and cries of "Fuck me boy, yeah fuck me". After a couple more minutes of pounding away at his wonderful ass, he cried out he was cumming. Driving my dick into him harder and stroking his cock faster, I felt the force of his ejaculation as Bill came all over the front of my uncles chair. Bills orgasm was closely followed by my second of the day, but not the last, as I filled his asshole with my cum.

Totally worn out, I let Bill guide me over to the couch where we lay together naked. Lifting my head up so we were face to face, Bill kissed me and told me I was no longer a virgin. Later that day my uncle asked me why his chair was damp, I told him I'd spilt a drink on it and cleaned it up. I'd actually cleaned the whole chair making it look better than it had in years. My reward was my uncle taking out to a diner for our evening meal. Dropping me off afterwards he told me he was going out to see a lady friend of his, saying I was to be in bed for school the next day by ten o'clock. At nine thirty I was balls deep up Bills ass again, only this time it was in Bills back yard underneath his log store.

It was a long hot summer that year. My mom had me stay over at her brothers whenever she had to work her night shifts. I didn't mind as I got to fuck Bills ass occasionally, whenever we got chance. I also got my first piece of pussy that summer too. It was one of Bills grandaughters who was two years older than me. She came by with her parents and we hit off straight away. I knew what my cock was for by then and she certainly wanted it once she saw how big I was. She showed me what a rubber was for and after that I never fucked anyone without one.

I look back now at those years and wonder if Bill hadn't have had me fuck him, would I now be a bisexual man. I still think I would, because at just over nine and a half inches, my cock loves being iside any willing pussy or asshole.