You'll never believe what happened next.
If you read the previous story, then you know that my sister Michelle stayed home from her piano lesson after leaving school early with an upset stomach, or so I thought. Apparently, she started to feel better, and not wanting to miss her lesson, she decided to tough it out, and take her lesson. Anyway, when she got to Mrs. H's house, and discovered that I wasn't in the living room taking my lesson, she ventured upstairs to discover me in bed with Lisa and Laura.
When my sister walked in, I was speechless, and from what Lisa and Laura told me later, I turned redder than a tomato. After about ten minutes of discomfort, Laura, Michelle's best friend, asked my sister if she wanted to join in. To my utter amazement, she said yes. My first thought was that they wanted me to leave, but they wanted a foursome, and that's exactly what they got.
I never really noticed before, but my sister has an extremely hot body. Her ass is to die for, and her breasts are about a 34C. I don't really know breast sizes, but I've heard her talking on the phone to Laura, and I've heard her repeat that number before.
Anyway, she was a bit hesitant, so Lisa stood up, gave my sister the most erotic hug I've ever seen, and planted a kiss on her that was literally 60 seconds of nothing, but two girls tongues dancing together in pure lustful harmony. Michelle, grabbed her ass, while both girls fell to the bed. Now things were a little weird, to say the least, but when Laura asked me to finger Michelle, I really wasn't sure what to do, but Michelle just looked at me reassuringly, so I went to work masturbating my sis.
While I worked her pussy, her best friend Laura was gently caressing her breasts. The look on my sister's face was one of pure ectasy. She was in the middle of the bed being pleased in every imaginable way. Lisa, feeling a little left out, bent over my sis, and started kissing her lips upside down. Michelle was clearly enjoying the attention, and her pussy juices dripping all over my hand and the bed was a clear sign that she was getting close to orgasm. When she finally did cum, she tensed up for about 15 seconds, and then just went limp. The smile on her face said it all.
I'm not sure, but I think my sister and Laura had done this before. Maybe all three of them, but in any event, they knew what they were doing. I felt like the rookie in everything that was going on, but to be honest, I really didn't care. I spent an afternoon with three very sexy, and erotic girls, one being my sister, and I experienced things that afternoon that I never even thought were possible.
When Lisa asked my sister to jerk me off, my cock felt like it grew several inches. My cock got so hard at the thought of my sis giving me a hand job, I almost came on the spot. Just as Michelle touched my cock, Lisa started licking one of my nipples, and her sister Laura started fingering my sister from behind. My sister was a little hesitant at first, but soon after Laura started in on her wet cunt, she really started to feel at ease. I could see Laura caressing my sister's asshole and pussy at the same time, and I could tell she was enjoying it. By now, my cock had so much precum leaking out that my sis had no problem getting her hand to glide up and down my pole, and to be honest, I have no doubt that she had done this before, because she was doing a great job of alternating between stroking my cock, and stimulating my balls. She even worked the tip in a circular motion like she knew exactly what I wanted, when I wanted it. She was a pro.
I couldn't believe it, but my sister had me seconds away from blowing my load, and I really didn't know where I should unload it. Anyway, she knew I was close, and before I could say anything, she guided me right over her titties, and I shot my load all over her stomach and breasts. All I remember after that is collapsing on the bed right next to her. After that, she turned away from me which left her ass, and pussy right in my face. I didn't dare do what I was thinking about doing, but the smell of her pussy, and just the sight of her glistening cunt got me erect within minutes. I just laid there for several minutes taking in the sexually charged atmosphere. The smell of four sweaty, sex crazed teenagers was almost too much to take in.
The afternoon went on for another hour or so, and we've had a few other sexcapades since then, but I'll save them for another time.