This continues the story of what happened after my girl Karrie showed her sister her new piercing.
...With her fist still wrapped around my cock, Karrie slid the head of it up and down the length of her younger sister's slit, getting it slick with her juices and ready to take her. Laurie and I both groaned with anticipation, but Karrie continued to tease us. We were kissing, our tongues twisting from Laurie's mouth to mine and back. Karrie bit me on the shoulder, just to make sure I still knew she's there. But with the feeling of her hand around my cock, how could I forget?
Karrie finally allowed the head of my hard-on to enter her sister's tight little pussy and Laurie and I both let out a little sigh. But big sis hadn't let go of her hold on me and I was afraid to start fucking for real. Instead, she leaned in as close to me as she could, her lips touching my right ear, and whispered, "Take her. Fuck her like you fuck me. I want to see it. I know how much you've wanted her. Here's your chance, Baby."
With that, she let go of my dick and watched as I pushed the whole length into her sister's willing little cunt. Karrie shivered just a little, and I let out a low sigh. I felt her left hand cup my balls from behind as her other hand on my hip started uging me to move in and out of Laurie's tight wet pussy. As Laurie and I started to establish our own rhythm, she took her hand from my hip and used it to turn my head to face her. Mashing our lips together, Karrie kissed me, like only we can kiss. I lowered my head and bit her hard, just above her left nipple. It was a perfect bite just the way she likes it.
Karrie noticed I was really fucking Laurie hard now, our bodies slapping together as we're all starting to sweat a little. Just seing me fuck her little sister, and holding my cum filled balls in her hand, had Karrie worked up and hot. She wanted my dick for herself, but knew she couldn't because of her new piercing wasn't quite ready for that yet, so she figured the next best thing was to watch me while I pounded in and out of Laurie, with her kissing me and nuzzling my neck.
After a few minutes I gently shrugged Karrie off my back, and rolled Laurie over to her knees facing her sister. As I moved behind Laurie, Karrie was resting against the arm of the couch, watching the expression on her little sis' face change to one of intense pleasure as I pushed my hard cock back into her deliciously warm cunt. Gripping her waist I began grinding my hips against her ass, forcing as much of my cock into her as I could. Looking past her body, I saw my girl. Our eyes locked together, but I can see her breathing is a little ragged. My eyes moved down her body and I saw Laurie had several of her fingers inside her sister, two in her rediculously wet pussy and one stroking in and out of her ass. I think if it weren't for fear of hurting the new piercing, she would have had her warm tongue licking at her sister's clit.