I'm an experienced cocksucker. It wasn't always like that. Growing up my sister often teased me because I was short and thin. She often talked about how life was good for a gay man who could suck cock. Finally one day she asked me if I was gay. I said I wasn't sure, but sometimes I think about it. She said she knew a gay man who could check me to see if I was gay. I told her okay.

She introduced me to Steve. He was a big, fat black guy. You would never think he was gay by the way he carried himself. She took me to his house one Friday night. I thought she would leave but she seemed interested in watching what happened. We were pretty close and there were no secrets between us so I decided to see how it went anyway. He had me sit on the couch and took his clothes off. Compared to mine his cock was massive. He stepped forward. I looked at sis and she was in a chair rubbing her pussy. This was turning her on as much as me.

As I stared at it I gravitated forward. He put his cock up to my lips and I opened my mouth. He put his cock in and I closed my mouth on it. I loved it immediately. I started to suck him like I imagined it should be done. He got bigger and bigger in my mouth. Sis said, "You like sucking that big black cock, don't you?" I shook my head yes. He then began to fuck my mouth. He held my head and thrust in and out. Not to the point of choking me, but enough so I knew I was being mouth fucked. I sucked him for about 10 minutes and felt him tense up. Then he started cumming. He filled my mouth. I had decided that if he came in my mouth I would swallow it all. I nearly made it. He finally pulled out. Sis looked at my crotch and mentioned my hard little cock. Steve had me get undressed and said this was the next lesson. He had me kneel down with my chest on the couch. He started to lick my asshole. It felt great. I shoved his tongue in as far as he could, then finally pulled his face away. He knelt behind me and I felt his cock at my hole. He pushed in slowly until he filled my asshole. At first it hurt, but the pain quickly subsided. He started to slowly fuck me and I quickly started to get into rhythm with him fucking him back. I was moaning like a little school girl.

Sis came over and sat next to me on the couch. She was now naked as well and had three fingers in her cunt as she watched her little brother get fucked. Having just cum he lasted nearly half an hour before he grabbed my hips and pulled back. I could tell he was cumming. He filled my ass with his hot jizz until it squirted out past his cock. "Boy," he said, "Your cunt is tighter than an eight dollar pig." He finally pulled out and walked into the kitchen for a beer. Sis finished making herself cum and stood up to get dressed. She said it was time to go and I got dressed as well.

On the way home she mentioned how fucking hot it was to see her little sister/bro get fucked by a big black cock. That started it and I've been sucking cock ever since.