"Ready for some real fun, Mark?" enquired my Master, with a lascivious grin.

"Too damned right," he replied. Getting off the settee he quickly stripped off the remainder of his clothing and lay on the floor.

"Harriet, you know what to do!" he commanded. This time I did. I was learning, I thought, coming to know what he required of me. My arse still throbbing from the pounding given to me by my Master's cock, and my pussy hot and trembling from Andrea's wicked touch, I squatted over Mark and lowered myself on to him. It slid in easily and I rested on him for a moment, feeling the exquisite sensation of this man's cock inside me for the first time. Aware of a roomful of eyes on me, I began to thrust up and down on top of him, sliding myself to the full extent of his cock and riding back down on top of him again, commencing a steady rhythm and working up gently to a good riding pace.

I looked on, awestruck, as Angela, now completely naked, faced me and bestrode Mark, lowering herself onto him, resting on her ankles with her pussy delicately poised above his waiting mouth, before sinking the final inch so that she engulfed his entire face. She had a fantastic pussy, with a lightly trimmed bush and beautiful, neat lips. I was in awe of her beauty, overwhelmed by this vision of perfection sitting opposite me. We faced one another as we each brought our own brand of pleasure to Mark. It was a delightful moment, an oasis of calm in the midst of a frenzied orgy, but it ended immediately as I felt my Master's hands on my hips, urging me to adjust my position and push my arse out towards him. I knew what he wanted and slid my knees outwards so that I could keep Mark's cock in my cunt but present my arsehole for my Master.

Again, I felt him pressing into me, and this time he found entrance quickly and easily. The sensation of one cock in my vagina and another up my arse at the same time was extraordinary; it felt as if they would burst out of me and I would explode into a thousand pieces. It was painful, uncomfortable and overwhelmingly exciting. At times I couldn't tell which was which and, certainly, towards the end everything merged into one great mélange of carnal pleasure. I had never been so aroused in my life. I continued to push up and down on Mark's cock, feeling him throb inside me, while my Master pounded hard against my arse. In and out, up and down; in and out, up and down; the three of us played out a symbiotic sexual encounter, each dependent on the other.

John was standing beside me and I turned to face him. I had a cock in my pussy and one in my arse, so I had to complete the set with one in my mouth. He moved close and, taking his cock, eased it into my waiting mouth. As I thrust up and down on his proud cock I set the same rhythm as with Mark, sucking as hard as I possibly could, creating a vacuum with my mouth and applying all the pressure I could to his throbbing cock.

And it was John who came first, exploding noisily into my mouth. I felt a twitch from the base of his cock and the telltale signs of him pressing deeper into me and thrusting his hips to meet me. I knew he was coming, and prepared myself as a huge spurt of hot liquid exploded onto my tongue and down my throat. Another followed, and another, smaller and smaller, until the explosions from his cock expelled no more liquid, and his climax subsided. Without sucking, I kept his cock in my mouth, feeling it gradually return to its normal state.

Mark was next. Now that John was finished I concentrated harder on Mark and thrust more forcefully on top of him, tensing and flexing my pelvic muscles to add to the sensations assailing his cock. It had the desired effect, and he too began to breathe shortly and quickly. His hands clutched at Andrea's thighs, pulling her harder on to his face as his jism shot upwards and deep into my pussy. As he came so did she, shreiking like a banshee and thrusting energetically and, I would have thought, painfully up and down on his waiting mouth. Watching that, and feeling Mark come inside me, I let out a groan, inadvertently giving an extra thrill to John, whose cock was still wrapped around my mouth.

And finally my Master. I lay on top of Mark, not moving, feeling his cock still inside me, his juice dripping slowly downwards. My Master continued to thrust into my arse. I had never experienced anything quite like it. I knew I was heading towards an almighty climax, but sensed it was going to be different from anything I had previously known. Where normally they emanate from my womb and gradually spread to cover my entire body, this one was growing like a tornado all around me. Already my entire body was given over to it. My limbs were alight, and I realised that the climax was coming from outside of me and taking over my body; normally, my climaxes are as much mental as physical, and spread from the outside in. This one, though, was purely physical, and it was attacking me from all corners. Every part of me was engulfed in it. My Master began to thrust short, hard and fast. He was draped over me, his hands on my breasts, squeezing insistently; his breath was hot on my neck and as he exploded into me I felt him bite hard on my shoulder, pain to mingle with the myriad others senses which had overtaken me. I felt his seed soar deep into me, his pleasure transferring itself to me, adding a wonderful afterglow to the climax I had just enjoyed.

And at that moment I knew my place. These were my Masters and Mistress. And I was Harriet the Slave Girl.