Thursday, July 2 nd , 2009...
I was up early the next morning. From the moment I unleashed my load the previous day, I knew I would have to do it again. Of course, my parents were already at work when I awoke, and it had only been a matter of waiting for Mandy to leave for her part-time job. So of course, the moment she left and I heard her car pulling out of the driveway, I ran straight up to her bedroom. I immediately headed for her laundry hamper and started digging. The first thing I found were the panties I had cum in the previous day. Just remembering how that had went was starting to make me hard.
I quickly discarded those panties, wanting to use something new this time. In my continued search, I came across a pair that fancied my current interest. They were green and white stripped bikini panties, with wide hip straps. A thought suddenly hit me, a wish; that I could have seen Mandy wearing these. As before, I hurriedly took off my pants and underwear, sitting on the edge of Mandy's bed with her panties. I was already rock hard by the time I grabbed myself and started stroking, once again holding my sister's panties to my face. They still smelled of her, and the scent seemed to expedite my climax. It was disappointing to feel it about to happen only a minute after starting. Unfortunately, I could do nothing to stop it. The next thing I knew, there was a puddle of cum between my feet once again. My fingers were also once again laced with my semen.
I knew I wasn't finished yet. I just had to cum again. But my arm was already worn from stroking so fast and hard. Then an idea hit me like a lightning bolt. Heading into the bathroom, I thoroughly washed my hands, then returned to Mandy's bedroom. I sat the edge of her bed again, and took a deep breath. Slowly, I began stroking again, awakening my cock to erection. Though this was the first time I had ever tried to continue after finishing, it seemed to be going well. Also, I couldn't believe how much better it felt the second time around. With every upward stroke, I grew harder. With every downward stroke, I imagined that my hand was Mandy's pussy. It wasn't long at all before I was once again fully erect, and ready to execute my plan.
Releasing my cock only momentarily, I took hold of the front of the panties. With them completely open, I lowered them, wrapping the front of my sister's panties around my rock-hard erection. I wrapped it firm, but not too tight. Tight enough to keep the panties from falling off of me, but loose enough to allow the material to rub against my skin.
I started as I always did, slow at first while gradually building speed. I knew from this moment, my hand alone would never again be enough. How could it? How could my own hand possibly compete with the feeling of my elder sister's cotton panties rubbing up and down my aching shaft? My body quivered, crying out for more. When my hand had peaked at its speed, I began applying more pressure to the top of the shaft, just below the head. Doing this always made me cum faster, like a hidden g-spot.
Panic suddenly washed over me. I could feel it coming. I was going to explode in my sister's panties, and I couldn't stop myself. Don't cum in your sister's panties, don't cum in your sister's panties,
I kept mentally repeating to myself. But my hand kept stroking, and my hips kept bouncing in rhythm with it. There was nothing I could do to stop myself.
Then it happened.
The first squirt alone shot so hard that half of it immediately soaked through the front of Mandy's panties. The second shot followed close, pushing more through the cotton. It began dripping as the third and fourth shots exploded. After the final two shots, my cock, balls, and fingers, were once again dripping with my own hot cum.
After taking a moment to catch my breath, I began the clean up. I used the back of the cum-filled panties to wipe the small puddle from my sister's floor, then took the panties to the bathroom. I washed them as best I could, and decided it would be best to let them air dry in my room, returning them at a later time. For now, I would let them air dry atop my pillow, so that at night, I would smell my sister's scent mixed with my own, and dream of sex with her through the night.
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<a href="http://www.lushstories.com/stories/incest/my-lovely-sister-part-ii-at-it-again.aspx">My Lovely Sister: Part II: At It Again</a>