I have no regrets. I fought to be in the role I'm now in. Mistress Elsa is the most creative mistress in the whole of Berlin, probably the whole of Germany - and that's taking in a lot of very dominant women. When Mistress Elsa announced that she wanted only the most flexible man to serve her, I fought to prove that I alone was the most agile, the most bendy. In this I was helped by my medical condition, which I've had since I was born - all my limbs are double-jointed.
At the time, her stipulation that her future slave be able to hold a contorted position 'for at least 12 hours' raised a lot of eyebrows - what could the famed Elsa be planning? I alone found out. I still remember the day she had picked me. I had signed over my mind and body to her that morning but still wasn't expecting things to move so quickly. Of course, that was because I didn't know her yet. She's a very impatient woman. She took me that very day to the local piercing parlor. I dutifully lay there while I was given 6 piercings; a Prince Albert on my cockhead, a tongue ring (further back on my tongue), upper and lower lip rings and 2 special metal rings on the upper and lower sides of my cockshaft, about 2/3rds of the way down.
Later that evening while I was tied up so as not to touch them while they healed, a man from the Koln Agricultural Institute came and talked to Elsa for a while. I couldn't hear their voices clearly but he left her a big metal canister marked 'biohazard'. After he left, she gave me the first of many injections of a blueish serum to my testicles. It didn't hurt going in - but a while later my testicles would ache. Several days later, these aches would be accompanied by involuntary erections. During these periods I was able from my prone position to see my new piercings healing nicely. I was surprised by the intensity of these erections though; my skin looked pink and stretched tight.
After about a week of these periods, I realized what was behind the strange scrotum aches: my balls were now almost twice the size! Worse (or better, from Elsa's point of view), the erections were now more frequent. There was also one more effect of this process; after a particularly difficult night of strange scrotum-aches and long erections, I woke up with my bare legs wet and the sheet on which I lay soaked. And I mean soaked. It was a strange wet, like water only slightly slimier.
When Elsa came to check on me and switched on the lights, I could see my still-hard cock drooling furiously, thick ropes of pre-cum attached to my legs and the sheet. My huge balls were soaking. Elsa looked more excited than I'd ever seen her. "It's nearly time, slave," she purred, and came back with what I recognized as a muscle-stimulating machine (with those pads and an electrical charge).
The following morning my erection was still there as she strode in, bustling about, getting ready for me to do whatever it was she had chosen me to do. In preparation, she slid a tight cockring around the base of my shaft, beyond my piercings. Finally, she was ready. "Please assume the position you auditioned for me, slave," she said, breathily, aroused. Dutifully, I hoisted my thin legs behind my head. She tied my ankles together back there. I wasn't alarmed; I won the position because of my ability to contort myself for long periods unharmed.
My wrists were next, tied behind my back. Now, she pushed my head down, instructing me to open my mouth and stick out my tongue. My rock-hard cock quivered as I did so and felt my tongue touch my cockhead. I remember feeling amused by the fact that, flexible as I was, I had never tried before to suck my own cock. That thought came back to me many times later. Now the piercings came into play. She hooked my tongue piercing expertly onto my cock-piercing. They locked tight; now my cockhead would irrevocably lie on my tongue, my tongue basting my cockhead with spit, my cock-slit practically touching my tongue itself.
"Close your mouth," commanded Elsa. She was in power now, all sympathy for my previous trials forgotten. I did, enclosing my hot cockhead. Already I was having to swallow from the sheer volume of precum I was oozing out into my own mouth. "Slide your lips down your cock," barked Elsa, and I did until a 'clink' notified me that my piercings were in the way. I looked up, not moving, but I saw that she was reaching in to attach these, too. First the top pair connecting my top lip to my cockshaft, then the bottom lip attached underneath. I was stuck firm, my helpless tongue pressed against my cockslit, lips bolted shut around my cock.
Next, she grabbed the muscle-stimulating pads and placed a pad on either of my cheeks. "Would you like to see yourself, slave?" asked Elsa. I nodded slightly to indicate I did, and she wheeled a full-length mirror in front of me to show my face helplessly enclosed over my own thick cock. "Time to obey, slave," rasped Elsa, turning to the machine. I flicked my eyes and discerned two dials; the one that read 'charge' she turned to 'maximum'. The other one read 'cycle' and had many more options. She paused, then selected "slow to fast - 60 minutes". With a glint in her eye, she switched on the machine.
For a few seconds nothing happened. Then the first shock, short and incredibly intense, came as the pads caused my cheeks to suddenly contract and vaccum in with a loud "SCHLUCK", forcing me to suck incredibly hard on my cock in one continously long, drawn-out motion for a few seconds (that seemed like hours) before the charge dropped and my cheeks relaxed. After about 15 seconds, another loud "SCHLUCK" announced the next charge, my cheeks buzzing with current-induced warmth as once again I was made to involuntarily suck my hard-as-stone cock with the same continous, vicelike spasm. Each seizure was so powerful, like I was trying to suck my own cock down my throat, that it bluntly forced more salty precum than ever out of my slit directly onto my meek bound tongue.
And so it continued. I became fascinated watching myself in the mirror as each shudder hit with such force that my cheeks sunk in like a balloon in a vaccum, turning my cock-chained lips white and my quivering penis purple with the force. The electric pads had made me into an automated self-cocksucker, one that sucked with more vigour and force than the lustiest nymphomaniac, one that (thanks to my chained piercings) wouldn't ever, couldn't ever pull away or let up the pace.
I had become a cock-sucking machine and a willing particpator, both the sucker and the sucked. Each paroxysm of sucking felt marvellous on my cock, unnaturally intense. My mouth had long since gone dry in anticipation of what was being done to me, but luckily the ever-increasing pre-cum flow lubricated my mouth excellently around my glans.
Of course, right now the action was a slowed-down parody of true sucking, each single suck lasting several seconds with a large gap of nervous anticipation in between. But it was speeding up gradually, each 'schluck' coming just a fraction sooner than the other one. During one particularly strong spasm my pinched cheeks casued my tongue piercing to rub my frenum exceptionally hard and I realized I was coming. I closed my eyes for the inevitable. And...nothing happened.
Well, I was orgasming, my cock shuddering in my still-dementedly-sucking mouth. But I wasn't coming. No semen was coming out - then I suddenly remembered the cockring. How devious! I heard a voice from the corner of the room. "Next time, slave, keep your eyes open." I blinked my consent, continued to watch myself in the mirror. My balls ached more than ever before, backed up now. I stared at them, suddenly aware of just how huge they were. They were now each the size of a large apple, stretching my scrotum in a particularly ugly way. How much cum was in them? I had long since reasoned that the man from the Koln Agricultural Institute was to do with cattle breeding or something. His serum must have been to enlarge bull testicles and increase semen output. But when the bulls ejaculated, it was all collected in a vessel. When I finally ejaculated (if that was Elsa's plan) it was all going one place - my mouth, my tongue, my throat.