On one hand she was my sister and on the other she was my step sister. After about 3 minutes of sucking me off she laid down in the tub and starte... to masterbate through her panties. She came not only once but twice in a few minutes time. She then pulled down her panties and told me to fuck her. I complied, but hesitated for a second. I eventually just sat on my knees in my shower and without even a seductive look or a ok go ahead from my sister I rammed my dick into her pussy, and at first. Moving my butt in circles, I pretended to grind his package with my cheeks. I change the pace. I switched to a revolving motion; I was simulating riding him in reverse cowgirl position. Looking back at Ray as I grind against his body, I could see the grin on his face become a smile. Sitting for full-body contact, wiggling my bottom on his legs, and rocking back and forth on his male member caused Ray to be aroused. The contact between my pantyhose and his flesh did not take long to awaken his. The slap was strong and loud. They said nothing to each other, they just looked into each other's eyes.Oh, fuck. What had they done?Never, never, never in their lives had they ever acted violent with each other. Sure, they had lots of arguments, like all sisters, but they never got physical about it.And then, that Friday, it happened.In Linda's mind, it was somehow connected. The incest and the violence. After all, she had just be introduced into incest, and then she acted like a bitch, and. I was five years away from my legal age, Paul my best friend also the same age as me & Stephen, Pauls Brother 19 or 20 years oldI had just had my birthday I was really quite nieve, having not really discussed anything sexualand back in those days everyone was nieve, there was no internet or porn at your fingertips,the only thing we ever got to see was the odd leaf from a dirty magazine that may have been strewneither in the bushes or at the back of the garages further up on the estate, it was.