The ‘condition’ was in fact a miracle, a surprise gift from the DNA of my sturdy Nordic ancestors. “You have a very rare gene that makes you immune from HIV infection,” He calmly explained. “I don’t think we know exactly how rare this is, but the studies I’ve seen put it at less than 1% of the population in this country.”

My heart raced: all those years of safe sex and anxious HIV tests; all the days spent worrying when I couldn’t entirely remember the sexual activity of the night before; all the times I let myself go with a man I thought I might love; all the funerals of friends wondering if I would be next. It was all for nothing.

“So, there’s no chance of me getting it?” I asked incredulously.

“I don’t think so. From what you’ve told me about your sexual history, I’d say you’ve probably been exposed several times. It looks like your genes are protecting you completely.”

“Can I pass it on to someone else?”

“I don’t think so there either. Your body is destroying the virus before it enters your system, so I can’t see how it would be transmitted to others.”

Still stunned, I tried to concentrate on the warnings that followed. “You can still catch and transmit other STD’s, though. Syphilis and gonorrhea are rampant. I see herpes cases every week.”

I nodded in agreement, but was already planning a weekend of serious bareback fucking. Rightly or wrongly, I figured the other STD’s were mostly treatable, and was anyway feeling lucky for the first time in years.

I had been to the bath house downtown a few times over the years and found the scene more exciting in theory than reality. Tonight would be the reality.

I rented a room that I had no intention of using and removed my clothes. I had given myself the deepest, longest enema I could before I left, so I knew that my ass would be clean for hours and hours. I squeezed some lube into my hole and spread some more around. I wiped my fingers on the edge of the towel and set the little bottle on the cot. I hoped I wouldn’t have to return for more.

The ‘facility’ was an old warehouse building cut into several dozen small cubicles and hallways. It had a central room with sofas and a big screen TV, a small gym that was never used, a locker room for those too cheap to get a room, and a darkened wet area with showers, steam room and sauna. In the corner of the building, surrounded by a maze of corridors and cubicles, was a larger room with several small alcoves and tables. It was usually completely dark inside, and even after your eyes adjusted, you could see no more than a shadow.

There were a dozen men wandering outside the dark room. None were exactly Adonis, but then I didn’t intend to get married to any of them. I stared at several faces going in, waited for my eyes to adjust, and found a vacant table. I turned my back to the crowd, leaned against the table and spread my legs.

Within seconds, I felt a hand on my back and then my ass. Standing behind me, he pulled my ass against his hips. He still had the towel wrapped around him, but I could feel his erection poking out. He took off his towel, tossed it around his neck, and pressed his erection against me. “You have a rubber, boy?” he asked. “Fuck me bare,” I whispered. A few minutes later, the first load had been deposited in my ass. Of course, I was hard as a rock myself, but this night was about taking cum, not giving it out. As the man pulled out, I tightened my ass muscles to keep his load inside.

I barely caught my breath before the next man was inside me. He had a thicker, longer dick than the first, but I was sufficiently loosened to take him without problem. He lasted longer, too, before blowing the second load of the night into me.

I counted eight loads deposited before taking a break. I walked a little funny on the way out, trying hard to keep all of the cum inside my sore and very loose ass. Back in my room, I laid on my back and held onto my knees, hoping to get the cum to run inside me. I slid a finger easily into my hole and felt the sperm swimming inside me. The thought made me rock hard. Holding on to my precious cargo, I used my towel to wipe around the hole, removing the lube and leaked cum from my thighs.

After a few minutes of rest, I returned to the back room. I heard whispering as I approached. Apparently, the word was getting around. Two good-looking men followed me in as I retuned to my spot. I sucked on one while the other fucked me, then cleaned off the first dick while the other unloaded. When they were done, one of them whispered in my ear, “Where’s your room? We’re not done yet.”

I wanted more cum from other men, but these were excellent fuckers: sturdy youngish men with nice dicks. I decided to play in private for a while.

Back in my room, one man laid on the bed on his back. He was tall and muscular, fair-skinned and smooth. I looked into his deep blue eyes as I sat on his dick. His partner knelt behind me and I felt his dick touch my already filled hole. They wanted to fuck me together!

“I’m afraid I’ll leak if you do that,” I warned them.

“Don’t worry, we got plenty more,” the one said from behind. He was shorter but even more muscular, Latino and a little hairy. He held my hips and pushed his uncircumcised tool into me. As I feared, cum squirted out onto the white man’s groin. “Hot!” he said.

I leaned down, laid against the white man’s smooth chest and held onto his shoulders. His partner was doing all of the work. Fucking me together caused their two dicks to rub against each other more than either rubbed against me. I was sandwiched between them as the Latino leaned across my back and kissed his partner on the lips. They came together in short order, spraying their loads into me for the second time that night. They collapsed around me, their dicks sliding out as they softened.

“Don’t you think we need to see him again?” the Latino said to his partner, their bodies still heaped around mine on the little cot.

“Definitely,” the other agreed.

And so we made a date for the next week: dinner at their house. Come casual, they said as they left my room.

I spent the rest of the night getting fucked some more and the rest of the weekend trying to recover.

My hole was just about back to normal before I arrived at their house the next weekend. It was a nice place, I thought, as I walked up to the front door. A wide patch of lawn and mature trees surrounded a graceful, prairie-style home. On the porch, I noticed warm light escaping between the drawn curtains.

“Welcome,” Robert, the white guy said as he opened the door. “You remember Mario, don’t you?”

“How could I forget?” I said as we exchanged check kisses. They were both dressed in cargo shorts, T-shirts, and flip flops. They were even more adorable in their own home.

“What a lovely house,” I said to them.

We exchanged pleasantries, they showed me around the house, and we sat down for dinner at their kitchen table. Clearly, none of them were exactly gourmet cooks, but they had tried hard.

“Thanks for doing this,” I said, “but I’m a sure thing, you know?”

They chuckled. “Good to know,” Mario said, “but we’d still like to butter you up a little. You like to cook?”

“I cook a lot,” I admitted, “although it’s not so much fun for just one.”

We chatted about the weather, their home, and our histories. I told them my story, to all-around amazement. “You’re perfect for us,” they gushed.

They had been together for three years. They had met at the gym, admired each other’s bodies, and started dating. Early on, they realized they were both tops. They had solved this problem by bringing in a third whenever they could. To add to the complications, Robert was positive, Mario negative. Like most men, they hated condoms. Robert was a banker, but Mario was a physician who guaranteed that Robert would be well cared for no matter what happened. He had a specialty in experimental medical devices, whatever that meant.

“I don’t like fucking poz bottoms,” Mario admitted, “although I make exceptions. I get freaked out by it, to be honest, not really knowing if I will catch it that way. It’s unlikely, but possible. And of course, it’s not so good for Robert to cum inside a negative bottom. So we’ve never really found someone we both like that we can both fuck bare.”

After dinner, they fucked me separately and together in their big king-sized bed upstairs. “I notice you hardly ever cum,” Robert said.

“It’s true,” I announced. “I like to concentrate on the man inside me, or in your case, the men inside me. For some reason, it’s far more satisfying to feel a man blowing into me than it is to ejaculate myself. Of course, if I do cum by accident, getting fucked is a lot less pleasurable. So, I try to avoid ejaculating at all costs.”

They agreed that it was a big turn on to use a bottom that didn’t cum. “I like your focus on my dick,” Mario said to me, “but what really gets me going is when I see that your dick is soft. That’s how I know that it’s all about me in your ass.”

We had dinner several more times and began to spend weekends together. I got to know them separately and found I liked them both. I stayed at their house more and more. In return for their semen blown into my ass, I cooked their meals and helped out around the house.

As time went on, our sex got progressively kinkier. They locked my genitals in a chastity cage when I wasn’t at their house, eventually keeping it on all the time. They suggested I keep my ass clean shaven, then told me to shave my entire body.

Some months later, they invited me to live with them, but with one big up-front rent payment. “We want you to keep helping with chores around the house,” Robert noted. “And, of course, we’re both going to fuck you everyday and every night.”

“This sounds great so far,” I said.

“But there’s one condition. We don’t want you to cum, ever,” Mario said.

“Well, I can certainly try,” I said, not understanding what they were getting at.

“Yeah, we want a more permanent solution, something guaranteed,” Mario said. “If you move in, you’re going to have to be castrated. We want to know that you will never cum, that you’ll always be focused on pleasing us.”

“How would you do it?” I asked.

“Very humanely, I assure you,” Mario offered. “I’ll do it in my office. You’ll hardly feel a thing.”

“What assurance do I have that you won’t cut them off and then get tired of me?” I asked.

“We’re in this for the long haul,” Robert said. “We’re honestly more worried about you leaving us than the other way around. Doing this to you is our way of keeping you here.”

There was no reason to worry about that and there was no question but that I would accept. They were gorgeous men with a beautiful house who would keep me full of their cum for a long time.

“There’s more,” Mario said, “As long as you’re there, I’d like to try a few other modifications. Nothing serious, but you’ll be a better bottom, I promise you.”

“Then I’ll do it,” I announced. I trusted both of them entirely.

The next Saturday, I moved my few belongings into their house. On Sunday, we went to Mario’s empty office. I laid on an examination table as Mario injected my arm. “It will all be over when you wake.”

***

I was more than a little confused when I came to. I found myself in the spare bedroom of the house, my wrists and ankles tied to the bed. I looked down, but could see nothing beneath the sheet and blanket that covered me. I felt nothing in my groin, but my ass was definitely sore, though different than it was from being fucked. It felt oddly tight, which didn’t quite add up.

A few minutes later, Mario came into the room. “Oh, good, you’re awake. How are you feeling?”

“OK, but why am I tied up?” I demanded.

“I can release you now. I’ve kept you sedated for several days to give you a chance to heal; sometimes patients can tear out bandages in their sleep.”

“Several days? How long have I been out?”

“Two weeks. Don’t worry, I talked to your boss. I told him that you’re under a doctor’s care and won’t be able to return to work for a while. In any case, I think you’re pretty much all healed.” He lifted up the sheets, revealing a bandage over my genitals and a small tube that extended to beyond the bottom of the bed. When he pulled the bandage off, I saw the loose, empty skin of my scrotum, a weirdly limp penis, and the tube that emerged from the perineum. He saw the quizzical look on my face.

“While you were there, we opted to change a few other things for convenience, as I suggested I might. Of course, your balls are gone. I also removed the tissue and nerves from the inside of your penis. No matter how aroused you are, there will be no erection. It’s not only a question of hormones, it’s now also physically impossible. Without the nerve endings in your penis, you’d find it difficult to urinate properly, so I created a new piss slit for you and sealed the urethra into the penis. You’ll have to squat to piss from now on, I’m afraid.”

“You know, I’m not all that upset about any of that, but why the secrecy? Why not ask me first?”

“I understand, and I apologize, but it was all kind of spur of the moment. There’s something else that I also think you won’t mind about. I fixed your ass, too.”

“What do you mean?” I asked, incredulously.

“I made several little changes that will make improve it for all of us. First, I implanted electrodes around your hole. The electrodes will be controlled remotely, by Robert or me. When we activate them, your hole will tighten uncontrollably. This will help you keep our semen inside of you and will also keep your ass tight for us to use. I also implanted a second set of electrodes around various nerve endings in your rectum. When activated, you should feel a deep physical desire to be fucked. As part of that, your hole will begin to spasm and several tiny devices around your anus will begin to excrete a smooth, clear lubricant. Several small sensors are linked as well, which will cause the yearning to dissipate for a short while when fresh semen is detected. I imagine the yearning will be greater than any bitch in heat, although I’m anxious to hear what you think. Finally, there is a clever device implanted high in your large intestine. When activated, a rubber clamp closes around your intestine and it forces the excretion of a large, measured amount of watery fluid into your rectum. This process should clean your rectum quickly, completely, and naturally. In total, your anus will be kept tight, you will yearn for us to fuck you, you will be moist for us to use you, and your hole will be clean and ready whenever we desire.”

My eyes sunk back as I considered what they had made me. They had made me into a castrated pussy hole, just for them.

“All under your control?” I asked.

“Oh, yes, the control panel is PIN-activated. I’m afraid only Robert or I will be able to use it.”

“How long will those feelings last?”

“Good question. The clamp and clean process will take about thirty minutes to clean you completely. It will time out after two further hours, but can be reactivated whenever we desire. We can also have the clamp without the washing, if we think that it’s necessary, or wash a second time if the first was incomplete. The spasms and tightening are virtually unlimited, but we’ll just see how it goes. They will dissipate when semen is detected, then start over a minute or two later. The whole cycle is set on an automatic timer. You’ll be cleaned out early in the morning and early in the evening, followed by the yearning and lubrication. When the clamp cycles off after two hours, your hole will tighten uncontrollably. If we desire, we can start or end a step, or just let it run.”

“You’ve set my ass to run on an automatic timer?”

“Yes, I’m sorry to make you feel like an appliance, but it will be more convenient for everybody.” He changed the subject quickly, “How does your ass feel now? I’ve been running the tighten program for the last several days.”

“It does feel tight,” I offered.

He picked up a small device, shaped like a cell phone. “Let me turn it on again.”

He pressed some buttons and suddenly, I felt my hole clamp shut, more tightly than I could ever imagine. Try as I might to relax, it stayed clamped tightly shut.

“Weird,” I said, “but definitely effective.”

He punched more buttons. Suddenly, I felt a deep, deep desire within me. My hole grew wet, then loosened and tightened in powerful spasms. I moved my hips and arched my back. It was like a deep itch that could not be satisfied. It came to me all at once: a penis! Only a penis would satisfy me. My eyes rolled to the back of my head, I lifted my legs and spread them apart, and I moaned slightly but deeply.

“You want it, baby?” Mario asked.

“Oh, yes, more than anything.”

He punched more buttons and the feeling gradually subsided. “Wow,” I said, “that was intense.”

“Yeah, we’re going to enjoy this, aren’t we?”

“It certainly seems like we will.”

“Robert is still at work. I think we’ll get started without him.” He punched some more buttons. I felt an odd movement in my gut, followed by an urgent need to use the toilet. He removed the restraints, bandages and the tube and pulled me to my feet.

“I think I have to go to the bathroom,” I said.

“Excellent, I’ll follow you.”

I sat on the toilet just as a torrent of dirty water exploded from my bottom. It continued for several minutes, gradually running clear before tapering off.

“Make sure you drink a half-liter of water every time,” Mario warned, handing me a bottle of water. “Now hop in the shower.”

While I did so, Mario slipped off his clothes and stepped in behind me. He gingerly washed and inspected my healed wounds, we lathered each other, and we rubbed each other’s slippery bodies. Midway through the shower, I felt the yearning in my ass suddenly grow. As we rinsed off, my desire for Mario’s penis became almost uncontrollable. I turned around and nuzzled his erect penis in the crack of my buttocks. I leaned forward and pushed harder against him. With the water off, I reached down and felt my hole lubing itself for him. I wanted him more than I ever wanted any man.

“Not here,” he said as he began toweling me off. Barely dried, he pulled me to his bed, pushed me down on my face and mounted me from behind. I was pre-lubed and moist inside, and his big uncut dick slid into me effortlessly. He fucked me hard, pounding me from all positions before finally succumbing to his urge and blowing his sperm into my warm hole.

Mario laid on top of me, momentarily exhausted. I felt satisfied, more satisfied than any sexual experience ever. Of course, my genitals were now worthless flaps of skin, but I was never more happy. A few seconds later, the yearning returned, right on schedule. I arched my back and moved my hips but nothing could quench the desire. As Mario watched, I tried rubbing my moist hole, to no avail.

“This is the only thing that will do it,” he said, rubbing his still limp rod and enjoying the sight of his bitch in permanent heat.

I leaned down and took his penis in my mouth. It tasted of the human body, of salt and sweetness, of my ass and his cum, and was gloriously devoid of the alkaline taste of lubricant or the foul taste of shit. I sucked him slowly, hoping to guide him back to my hole.

A few minutes later, he obliged me, this time fucking me slowing and lovingly, looking me deep in the eyes. He held the loose flaps of my ruined penis as he blew his second load into me.

The second load caused me to relax, though I knew it would only be for a minute. I heard the door downstairs open and Robert approach.

“Looks like you’re going to be in luck, baby,” Mario said, “I’m sure Robert will want some right away, too.”

Robert walked into the room, still dressed in a business suit. “Wow,” he said, “it looks like someone is all better.”

“We both are,” Mario said dryly. “I think you should join us. The wounds are all healed, and my extra features are working flawlessly. I’ve tried it out a couple of times already.”

Robert slipped off his clothes, carefully hung the suit in his closet and climbed into bed. He kissed Mario on the lips and felt my moist, open asshole. When he finished pumping his poz load into me, I felt my mechanically induced desire finally subside and my hole shut tightly, holding all of their semen inside me.

“I just realized the irony,” Robert said as we three lazed on the bed in a pile of male parts. “You have a rare gene that made us want you so bad that we cut off your balls, making it impossible for you to pass your gift to any progeny.”

“Well,” I said, “I don’t think there was really any chance of that. Besides, at the rate we’re going, I’m collecting plenty of genetic material from the both of you.”

As I talked, I noticed Mario fiddling with the controls. I felt the yearning returning, if anything stronger than ever. “Less talk, more action,” he said with a wry smile and a growing erection.