Our family room as set up downstairs, and my folks had purchased a large entertainment center. There was one remote that controlled the stereo, TV and VCR, and I had planned on using the large screen unit to my advantage. I had a hot film, complete with hot sluts fucking like nasty bitches. I had been getting laid pretty regularly at school, freshman girls were great for that, but I did not plan on any action during my visit home.

It was the third day home when I found myself alone. I popped the tape in and positioned myself on a towel in front of the big screen, a bottle of hand lotion nearby. I squirted a glob into my hand, and I began to pump my hard rod along with the action on the scene. There was one scene where this guy with a fat cock fucks a girl from behind on a couch. She has a tiny little waist with a perfect ass and shaven pussy. He had her hanging off of the edge of the couch as he slammed into her, and I blew my many loads to that scene.

Following my orgasm, I cleaned myself up, turned off the TV and headed upstairs. The rest of the day was uneventful, and as the evening approached my parents made dinner plans. My sister Cindy had invited one of her girlfriends over, and they headed downstairs to watch TV. They were down there for about an hour when I realized that I had left the tape in the VCR. I quickly made my way downstairs, and the tape was already running.

My sister Cindy was 16, and her friend Susan was over. They were similar girls, both with light brown hair and petite frames. They danced together in a ballet troupe at school, and they were both compact and slim. I had seen Cindy in a leotard in many occasions, and although she was flat chested and thin, she did have an amazing body with perfect curves. Susan was similar, with a larger chest.

"Uh, I left that down here by mistake, I am sorry," I stammered out as I made my way over to the screen. They had rewound the tape and were watching a hot lesbian scene, both of their eyes glued to the screen.

"Don't turn it off," Cindy pleaded, Susan nodding behind her. "We have never scene anything like this, and we want to know. Please?"

I weighed the consequences and my plans for the evening, and I figured that there could be worse things to do than to watch a porno with your little sister and her friend. I put up a small argument but soon found myself sitting with them, their attention glued to the large screen. It was a very erotic scene, and I smiled to myself as I noticed the nipples that stood at attention on each chest. It was a hot situation, and I found myself getting very turned on by my little sister.

As the movie progressed they began to ask me questions, both girls still visibly excited and turned on.

"Are you a virgin John?" Susan asked me, Cindy's face turning red at the question. "Have you done anything like this yet? What is college like?"

"Well, I have been with a couple girls," I confided in them, "And I did have sex with my girlfriend in high school. It was good, but nothing like this. This is a very hot movie."

"Oh yeah, it is very hot," Cindy told me, a smile spreading across her face. "We both have been enjoying this. Do you have any others?"

I explained to them that I did have a couple others at school, and that I had brought only one home. "You guys are both virgins right? You are both pretty young."

Both girls turned bright red as they nodded their heads at me, telling me that had kissed some boys and did some light petting, but nothing close to sex. The inevitable question came next, and my answer set the stage for the rest of the day.

"Why did you leave the tape in the VCR?" Cindy asked me, her small nipples still poking straight out of her shirt......(cont)