Mistress lay on the bed, her beautiful stocking clad legs spread apart, her shiny high patent heels dangling on the end of her feet. She was waiting for Master. He stood at the end of the bed. I was kneeling beside him. He took my head and forced it onto his cock which I sucked until it was hard. It filled my mouth. Master pulled me to my feet by my collar and told me to kneel on the bed beside Mistress, with my head over her pussy. He climbed onto the bed and told me to lick her pussy and clitty thoroughly, pushing my head into it. I felt Mistress finger nails as she grabbed hold of my balls from behind and she squeezed and pulled them. I moaned into her pussy as I continued to lick it. My head was pulled up and Master pushed his cock into Mistress. He pushed my head back down and told me to carry on licking and sucking Mistress' clitty. I did so and my tongue rubbed of course along Master's shaft as it slid in and out. Mistress continued to squeeze and twist my balls then I felt her finger probe deeply into my anus where she pressed on my prostate, making me squirm. I could Master and Mistress becoming excited and by the thrusting Master had cum. As he withdrew, he held my head down and told me to lick the shaft clean. He pulled his cock out, lifted my head up and told me to clean him thoroughly. I licked and sucked his cock all over. Then he told me to kneel on the floor and Mistress slid to the edge of the bed and wrapped her stockinged legs around over my shoulders, digging her heels into my back. She then told me to lick her clean and not stop. I did so and kept licking and sucking until I heard her cum too. Mistress then got up, secured me to the end of the bed so I was standing with my legs secured by each ankle, spread apart and my arms likewise part. Mistress then played with my cock and rubbed it back and forth along the shaft, taking me expertly to the brink of cumming then stopping, squeezing the head of my cock until I subsided. Then she started again. She lay back on the bed next to Master. They looked at me and told me how much it pleased them to have me serve them like a true slave. Mistress flicked my balls with her heels, making me jump. She was enjoying herself. After a while she got up and came and sat in front of me. She rubbed her body over mine and nibbled my neck. I was very turned on. She straddled herself in front of me and began to play with my cock again, expertly rubbing it up and down. It wasn't long before I was ready to cum and I asked permission to do so. Mistress told me I could. Of course, I was not to enjoy the pleasure of cumming so easily. Just as I was about to cum, and Mistress obviously sensed this as my body began to thrust, she stopped sliding her hand along the shaft and simply pointed the head into her other hand. The pleasurable sensation of the rubbing stopped immediately but I was past the point of no return. I could not help myself from cumming and it gushed out into her hand. I had been denied cumming for a week but teased mercilessly so my balls were full. At the same time she lent forward and, clasping her teeth over one of my nipples, she bit hard and carried on biting as I came and for a short while after. Once Mistress' hand was full of my cum, she stopped biting and sat up. She reminded me that being a slave meant amusing them both and only being allowed to cum, if at all, painfully. She also said that just because I had cum did not mean I would be released. With this, she held her cum-filled hand up to my face and told me to open my mouth. She then rubbed her hand over my mouth and face, ensuring that plenty of cum went into my mouth and over my cheeks. She told me to keep my mouth open and proceeded to spit into it and over my face. She wiped her hand clean on my body, ensuring to twist and pinch my nipples as she did so. Then she lay back on the bed, cuddled up to Master and they both dozed off, leaving me to feel humiliated as I was strung up there, watching them, unable to move, covered in my own cum and Mistress spit...