The Lab Assistant by Jaz Monday

between my thumb and index finger, I squeezed tightly until her nipple discolored and she moaned and squirmed under my touch. Then, methodically, I placed the point of the pin against the skin of her nipple and firmly pressed the shaft through. She moaned softly, and thrust her hands into her sex. A small trickle of blood leaked from her nipple. Before I could consciously process the thought, I bent down and licked it up. I placed my mouth onto her. The cold, steel pin pressed under my lips and jutted out on either side of my mouth as if it were my mouth that was pierced. Gently, I sucked her nipple in against my tongue.
    "Jesus Mother," Sonia cried and pulled my head against her beautiful, brown tit. Her voice sounded staccato, possessed. "That feels incredible!"
    Pulling away, I repeated the process on her right nipple. Sitting back, I couldn't help but admire the beauty of the two straight silver pins juxtaposed against the fleshy, organic slopes of her breasts. The contrast was striking.
    "Coop," she sighed. "Fuck my ass now. Make me come."
    "How do your nipples feel?"'
    "They hurt. They sting so nice."
    Having slathered a large finger-full of saliva along her tight brown asshole and pressed the lubricant inside the sphincter and into her tunnel, I eased the head of my cock against her. I pushed and pushed and pushed, applying a steady pressure, but eased in ever so gently. Finally, I felt her orifice yield. The head of my cock slid in slowly, and she felt tighter, hotter, more vital than I'd ever experienced before.
    Her rectum was deeply warm and sticky. The friction of our parts tugged and milked my flesh. My shaft sank in and out of her, building momentum, building an intense, pleasurable knot in my gut. She felt creamy inside, and oh so tight. I closed my eyes and tried to think other thoughts, tried to place myself outside of my body, away from Sonia, somewhere else, but it was hopeless. Her bowels felt too good. I couldn't go on any longer. I had built myself to too many heights tonight and I could not deny the torrent any longer. With a sharp cry of Sonia's name, I finally collapsed on top of her. My throbbing shaft began to fill her delicate passage with come.
    She held my head against her chest, and I could feel the steel pins shifting as she breathed. Her heartbeat was a rapid drumming against my ears. Through the thin lining of her rectum, I could feel the clenching and releasing of her vaginal muscles. As her orgasm subsided she took my face in her hands and kissed me deeply.
    "I love you," she whispered.
    We fell asleep entwined in each other's arms.

Chapter Five
    We awoke the next morning, still in each other's arms, rolled up onto our sides in a tangle of sheets, body parts, dried blood from now-tender nipples, and tracks of dried semen. The room was placid and dim, and we lay still, holding each other, enjoying the residual glow of last night and the quiet calm that befell us. I'd pulled the pins out from Sonia's nipples and twirled the delicate, wounded nubs between my fingers. When I caught them just right, her whole body tensed and shivered uncontrollably and she forced her ass back against me. She ground herself into me until my cock was, once again, aching and straining toward her warm, wet fissures. She giggled and I giggled and we whispered our love into each other's ears.
    The moment lingered as we drifted in and out of sleep, lazing the morning away. Eventually, we faced the hard realization that we'd need to get out of bed and get on with the day. I had classes to teach.
    Outside, in the hallway beyond the dorm suite, we could hear the frenzy of students--alive, vigorous, well into their day.
    "Just a few more minutes, baby," Sonia pleaded in a delicate baby-girl voice.
    "Okay," I said. It wouldn't be good for me to leave now anyway, in the height of the morning rush.
    "It's okay about last night," Sonia said. "I needed you, too. And I'd been thinking of you. I was going to call you and ask you