If you haven't read Master's Game, I suggest that you read that first....
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If you will recall in the first part of this story, my Master had inserted a pussy and clit vibe inside me and we went to a bar. His game was that I was to try to pick up a man without using certain words that he had banned. Unbeknownst to me, the man that sat down next to me that I was trying to pick up was a friend of my Master's and was in on the game. I had used the banned words and the vibe was making me crazy, trying not to orgasm. The guy that I was trying to pick up suggested we go outside for some fresh air. When we went outside, he pushed me up against the building and started kissing me. I, thinking with my throbbing pussy and clit, started kissing back and grinding into him. That was when my Master came outside. He ordered me into the car and took me home. He tied me spread eagle to the bed, with the vibes still in, and put the nipple clamps on me. After I came yet again, he pulled the vibes out and sat in a chair next to the bed. The man from the bar entered the room and began to play with me.
As he played with my nipples and sucked them, although I tried not to get excited, I was so sexually energized by then, I couldn't help myself. I kept looking at my Master, hoping to see some look on his face to let me know that he understood or that he was upset, anything. My Master got up from the chair and told the stranger to wait a moment. The stranger got up from the bed and my Master then took a thick blindfold and tied it around my head. I was unable to see anything. I heard him say "continue" and I heard him sit back down in the chair.
I felt the stranger's mouth latch on to my right nipple again while his finger made slow circles around my left nipple causing it to become harder still. When he was satisfied it was as hard as it was going to get, he started pinching and pulling on the nipple until it slid from his fingers and he would start again. His mouth would suckle on my right nipple, and then bite gently. He would lick it and then clamp down and bite hard. The sensations were almost overwhelming. I've always been one who gets very aroused when my nipples are played with and this time was no exception. I felt the juice from my pussy dripping down over my anus and onto the bed.
He continued playing like this, switching his mouth and his fingers from nipple to nipple. My hips started to involuntarily rock, and I started moaning. I knew I was going to cum. I whimpered a plea begging him to stop, telling him I was going to cum. This didn't stop him at all. He continued his relentless assault on my nipples. Although I tried not to, soon, I thrust my hips upward and came with a loud scream. I was both ashamed at the thought of cumming for someone else than my Master and relieved that I came because of the feelings that he had built up inside me.