At 9pm on Sunday the 24th of May the lock snapped shut. I stood there looking at this new addition to my body and wondered what I had really gotten into here. No time to dwell on this though, as I was instructed to put my hands against the wall with my bum out. Snap! The first blow stung my naked buttocks. The next nine landed much harder: punishment for an earlier indiscretion. My Lady walked to the bed, undressed quickly and lay down, legs spread. Here freshly shaved pussy drew my attention immediately. My Lady had not shaved for at least 10 years. I grew hard instantly, but the cage resisted anything more that modest growth. Certainly not stimulation was necessary. My Lady looked up at me smiled and said you can go down there and give me an orgasm now. I placed my face between her legs and began. This was unbelievable. I was trying to stay focus on my job but the pressure in the cage was unrelenting. I gained control, though, and began to feel her body respond favourably to my tongue gently stroking her erect clit. She arched her back and came, as she did so she squeezed her legs, pushing my face hard into her saturated pussy. My Lady then got up had a shower and went to sleep. I was left to wonder again "what have I gotten myself into". The next morning I had to leave early to lecture undergraduate students. I was still locked. After an uneventful hour lecturing on the basis of fear. I walked across campus to begin the rest of my day. I walked in to see my Lady sitting there with a sexy top, gorgeous long skirt, and her best "fuck me" boots. My Lady works in the same place as me. She smiled and walked away with a confident swagger (that I don't think I have ever seen before), her heels clicking on the hard floor. I went to the toilet to readjust myself. The day was not very productive for me. The thought of her gorgeous, wet pussy filled my every thoughts. This was not helped by my Lady's constant presence and frequent teasing. That night I was allowed to remove the device for cleaning. At the end of this my Lady informed me that I would not be required to wear it for the next few days. But, I was to resist the urge to masturbate. I was told that I would not be punished for failing this time; she just needed to know how good my self control really was. On the second night I watched her take a shower. Lathering her amazingly sexy body and still smooth pussy. I told her that I would fail tonight. She said that that was fine and that she knew what she needed to know. After the kids and her were asleep, I stroked myself to the most amazing orgasm. I followed this up with another sometime early in the morning. The next day I was locked up again. While the day at work was easier, having my Lady so close was still amazingly frustrating. She did, however, tell me that she was going to require me inside her later that evening. After the kids has settled, she unlocked my, lay down and told me to lick her. I complied eagerly. I was so aroused I almost came at my first taste. After only a few minutes, she commanded me to rise. She turned on away from me on hands and knees, reached between her legs and guided me inside her. I had not been inside her for about 2 months and I could not remember that last time she had wanted it this way. She could feel my arousal growing. "Don't cum!" "What?" "Don't you fucking cum!!" "I don't think I can stop myself." "Don't fucking cum!!!" It was too much for me and I lurched forward as I came inside her for the first time in so long. She rolled onto her back with a resigned disgust. "Get down there and finish what you started" she growled. I paused. "NOW!!!!" Genuinely fearful I dove between her legs. I tasted the mix of her juices with my cum for the first time ever. She began to respond. I continued, doing everything that she instructed. Soon she arched her back and came. Just at that moment she grabbed my head with her hands, pushed my face firm against her pussy and rubbed herself up and down on me. She left to shower. On her return she told me that I could remain unlocked this evening. That night was the most amazing combination of feelings. I was in elated by the nights events, but humiliated at my lack of stamina (30 sec at the most). I masturbated as I lay there thinking about all this. The next morning, after we dropped the kids at day care, I confessed that I had masturbated. A look of anger that I had not expected flashed across her face. "What? When? Who told gave you permission for that? You think that you 'hair-trigger' performance last night warranted another orgasm". Silence. "You will be punished....tonight!"