I was a product of a random scientific experiment. I've never had any real birth parents. Well, tehcnically I do somewhere. Some male with incredibly potent sperm and a woman with a very weak egg, but my adoptive parents were all I had. Anybody would know that I was adopted, even since birth. They're both African American and I'm white and blond. Now? The differences have increased ever since what they did to me actually took effect. Most people know that boys are born with an X chromosome and a Y chromosome. Many also know that, because of dominant and recessive genes and the way an X X chromosome pairs up, there is no possible way for a Y Y chromosome to even exist. Of course a child needs to have an X chromosome- it's pretty much the blueprint of the human body, the mind, everything except the things strictly governed by the Y chromosome...meaning the cock and balls, basically. When I wasn't even a fetus yet, they managed to amplify the Y chromosome's effect on me to make it my dominant chromosome, rather than my recessive. Normally the X chromosome will come first, and always has in human beings ever since humans first appeared on this planet- hell, ever since other animals, as well. This basically increased masculinity. There were other embryos like this that didn't end up like me- I was the only success. One was born a hermaphrodite, another woman gave birth to what appeared to be a cluster of penises and no body. In all, I was one of fifty that survived. Nothing significant occurred during childhood. Sure, I had a larger than average dick and never gained any fat on my body, but nothing so abnormal that people would take notice. But when puberty hit...Well...Things got out of hand...Lucky for me, puberty didn't hit until I was about eighteen and just graduating from high school. Nobody noticed- I looked like your average teenager and my cock was average sized. Somehow the chromosome managed to make me taller and bigger without my brain even getting involved. Anyway, I woke one morning several weeks before graduation with a massive headache. I was feeling dizzy and I almost passed out. Looking down, I now noticed what was going on. My first erection. My cock was flaccid at about five inches and I've never had a boner before. I was now standing proud at way more than I've ever seen on any guy in the showers after gym. I sat up, feeling pain all over my body. I examined myself...overnight, my muscles had gotten larger, my nuts have expanded, and my dick reached just above my belly button when I pressed it against my flat stomach. I felt my hands all along my body feeling bulges where it was flat skin before, my entire body weak and my head spinning from a mixture of surprise and lack of blood. I gripped my cock. An electricity surged through my body that I hadn't felt before and a small drop of precum appeared at the top. I rubbed it down the length and more appeared. Fairly soon I was jacking off the shaft with one hand while spreading around my body's own lube with the other. I shut my eyes...It felt so fucking good, I couldn't believe it. I pictured the boys in the shower. The massive amount of masculinity in the woman's womb where I was implanted caused a surge of feminine hormones and antibodies attack me as I was a fetus causing me to pop out a total homosexual. I pictured their cocks, the way they sometimes played grab-ass with eachother just for the hell of it, the jocks' muscular physiques with the water running down their perfectly sculpted bodies. I opened my eyes, my cock seeming larger than before. I bit my lip as I felt orgasm approach. I began holding my breath, hoping not to scream. The surge grew and grew until it overtook my entire body, a pure feeling of ecstasy running through me. My mouth opened and a low guttural roar flew from my mouth, a sound I had no idea was in me. The first shot of cum flew up and hit my directly in the face. The others shot onto my flat torso. With each shot, my vision got blurrier and blurier. I could only hear the footsteps of my adoptive father pound up the stairs, my vision finally slipping into blackness as I passed out.