This is a work of (mostly) fiction. 
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    Last year, I met a girl on Tinder. After a few months, we started watching porn together before sex, exploring our bisexuality and experimenting with threesomes. I realized I have a huge size humiliation kink and I am fairly turned on by the fact that I can share the girl I love with better endowed men.
    We had some experiences with other girls, but finding a man for a threesome was harder than expected, men tend to be quite creepy or creeped out by the concept of me watching. 
    After a few months of trial and error, we met a 47-year-old Syrian doctor on Tinder, and things took an unexpected turn. She joined us for a threesome and hinted at the possibility of a couple swap with her husband. We agreed, organized a weekend at a hotel, and planned to indulge in three days of non-stop fun.
    
    We arrive on Friday night, exchanging a casual handshake as we meet the husband, a light-skinned man of mixed heritage from Nigeria, who works as a plastic surgeon. He appears to be in his mid-fifties, perhaps around 55 or 56, with a touch of gray in his hair, standing at about 170 cm, which is roughly 5'6" in American measurements. 
    
    My girlfriend, who is around 160 cm, and I, towering at 188 cm, create quite the height contrast, making me the tallest by a significant margin. Before heading to the hotel, we exchange pleasantries, pack our bags, and stroll into the apartment. 
    
    Once inside, we pop open a bottle of champagne and raise our glasses in a toast to the weekend ahead. However, as soon as we set our glasses down, the wife surprises me by leaning in for a passionate kiss and begins to shed her clothes. Dressed in a flowing dress, she effortlessly slips it off, guiding my hand to her breast as the kiss deepens. Observing this, the husband and my girlfriend follow suit, with my girlfriend being a bit more reserved since it’s our first encounter with the husband.
    
    After a couple of minutes, the wife wasted no time unbuttoning my pants and getting down to business, leaving me fully aroused as she went to work. 
    Meanwhile, my girlfriend and her husband were still exploring each other's bodies, with my girlfriend eventually revealing the impressive outline of his manhood through his boxers.
    
    The wife seemed to anticipate the reaction as she paused, allowing us all to witness the exchange between my girlfriend and her hussband, who was now being fondled through his underwear. 
    She couldn't resist commenting on the size disparity, comparing his cock to my cock in the hands of the wife.
    He was significantly larger than me in terms of girth, similar in length, although he was cut, while my cock was sporting a healthy amount of foreskin, even when hard. 
    
    As my cock stood at attention, my girlfriend subtly pointed out that his cock fully soft. He started making excuses that the Viagra needs some time to kick in, as he just took it before we arrived. I guess being in your fifties has its pros and cons, even with a huge cock.
    
    With his soft member slightly longer and much thicker than mine, the wife guided us closer together, positioning us in front of each other with the girls kneeling on the ground. As the wife continued to jerk me off and my girlfriend was sucking on the cock of her husband, in lighthearted playful  way, the wife took his husband cock and placed in top of my hard cock, as if it was holding it up. My cock could not handle the weight of his cock and faltered under the weight, making my cock bounce up and down. His cock essentially just slapped my cockm, prompting a shared chuckle among us all.
    
    Then we return to the oral sex, my girlfriend eagerly pleasuring the husband while the wife deepthroats me. After about 3 minutes, I'm close to cumming, so we have to stop.
    My girlfriend then calls me over and expresses her desire to try something new. She takes hold of the husband's semi-erect penis and playfully swings the husband's penis around, accidentally hitting mine and causing me to flinch a little bit, as it hit my balls a little.
    This seems to arouse the husband, who quickly becomes fully erect after seeing my reaction to the pain.
    
    As he starts to get almost hard, it was still somewhat soft, not completely rigid, but it was getting there. My girlfriend looked at it in awe, and then the wife, sensing the potential for embarrassment, brought out some wine and a tape measure.
    So my girlfriend began measuring the guy, and at that moment, he was 20cm long. I believe when he's fully erect, he's around 21-22 centimeters. 
    She then attempted to measure the girth, but struggled a few times because it was so thick that she had difficulty wrapping her hands around it. It measured a whopping 18 cm in girth, making the whole thing look quite comical. 
    Then it was my turn to be measured, fully erect. My girlfriend, being a bit playful with the measuring tape, only measured me at 14cm in length and 11cm in girth. The wife wasted no time in starting a little humiliation game. 
    
    The husband then stepped forward and began using his hips to playfully "sword fight" with me. 
    He did it a couple of times before my girlfriend intervened, grabbing his and my cock at the base to engage in the sword fighting game. 
    Mine looked like a fraction of his, as he was fully erect and mine appeared soft in comparison. 
    Eventually, my girlfriend stopped, giggled, and then pushed his cock beneath mine, causing mine to rest on top of his.
    Not much of his cock is covered, my cock looks like a toy compared to his, the girth difference is insane.
    
    My girlfriend is comparing my balls to his and says, "His balls are way bigger too, the tip of his cock is the size of your balls.", as my cock is going a little limp on top of this huge black cock.
    The husband is about 20cm shorter than me, barefoot while I still have my shoes on. His cock is pointing up in between my cock and sack. After this little interlude, my girlfriend sucks him off a little but he goes soft and says that he needs some time for the viagra to take effect.
    
    So we start packing in, bring in all the things, and put the clothes away. My girlfriend decides to "surprise the couple," so she gets naked and just goes to the living room and turns on the TV. After about 10 minutes, the other couple arrives, still in clothes, and sit next to my girlfriend, immediately groping her. 
    For the next day or so, we have "regular sex," just straight up swapping partners, orals, and such.
    
    Then the next day during breakfast, the husband brings up that he would like to "punish me" like he did when we first arrived. We go up to their rooms, I lay down on the bed, they undress me with my girlfriend, his wife sits on my chest and then hovers over my face so I can eat her out while I can feel my girlfriend sucking me off and I hear the husband undress.
    So after about a minute of this, I feel a warm slab land on my thigh, it is clearly his cock, and then he flings it into my cock, then grabs his cock and starts flailing at my cock and balls with his cock. 
    
    It is still soft at this point, so he can't really aim and he hits my balls multiple times. He starts getting hard after I wince a few times when he hits my balls. He gets fully hard and then starts to push into my cock, my stomach, my balls. It feels weird, I can feel his cock trying to push my balls "up" into my abdomen, but they always slip around his cock. It is slightly painful, but not horrible, it felt so hot having my girlfriend ride my face when a huge cock is playing with my cock and balls.
    
    After a few minutes, my girlfirend stands up, and leaves the room. The husband and I look at each other, as he is flinging his hard cock into my semi, it looks comical how big his erection is compared to my softish cock. When he rests his cock on mine, I can't see my cock or balls at all, as I am laying on the bed.
    My girlfriend returns to the room and asks me to go on all fours, I oblige. She starts slowly tracing circles on my back and my butt, while the husband is using my sack and cock as a pinata, and his cock as a bat. It hurts a little, but it is mostly just funny. 
    
    After a little while, I was feeling my girlfriend lubing up my asshole, I quickly stop them. I know I can't handle him, he's too thick.
    Instead, my girlfriend asks me to lay on my back, sits on top of my waist, partailly on my cock. It wasn't intentional, but my cock ended up being under her butt partially, it was soft, so it was not painful at all. As the husband is having sex with my girlfriend on my stomach, who is lying on top of my cock, my balls are just below her pussy being pounded by the husband. Our balls sometimes slapping together, causing someme some pain, but the situation was so intense that I didn't make a sound. 
    
    After a couple of minutes, he pulls out and cums on my thigh and my balls. My girlfriend then jumps up, squishing my cock a bit, but it wasn't too bad. 
    She starts to suck me off, when I get hard she slips my cock into her pussy, but it felt like I was fucking a too large fleshlight, after the husband she was stretched, it felt so hot I came in a minute or so.
    We took a little break, the wife and my girlfriend went to freshen up.
    The husband told me to lay back down. He wanted to punish me a little more, now that the girls were out of the room. He continued the cock slapping routine, but now that we were both soft, it hurt more for some reason. It might have been the size difference, the fatigue after the sex, I am not sure.
    
    I winced a few times, that got him hard again. He started pushing and swishing his cock into my taint and balls, playing with them with his huge cock. It was a little uncomortable, but not painful, it was really hot. Feeling this huge cock pressing into my balls felt like nothing else, I could feel his cock being too big, it essentially pushed by balls to the side completely.
    
    As he pleasures himself, he whispers "just a few more" as the girls return to the room.
    Upon seeing them, I nod in agreement, allowing them to enjoy the show.
    They both position themselves behind the husband and I slide down a little more and lift my waist, letting him have a better angle.
    He raises his member, letting it fall onto my lap. He proceeds to slap my testicles with his hand, his cock. He uses his cock to fling my soft cock and balls up and down, and then using gravity to slap them quite a few times.
    My girlfriend intervenes at the end, and starts jerking him off above my cock. He ends up cumming on top of my belly, cock and balls.
    His wife then cleans us up with her mouth, he licks everything up, and then proceeds to suck of her husband as well.
    
    We move on to have dinner. The night ends uneventfully, with us sleeping and having "regular" sex in the morning. 
    The crucial part of my story is that my testicles were still slightly sore from the slapping. I ask my girlfriend for a painkiller, and she gives me some from her bag. 
    The pain subsides quickly and I think nothing of it, we leave the couple's house without incident.
    We plan to meet again at our place for another weekend, as this was maybe the hottest swinger experience we had to date. 
    The following day, they inform us that they have a conference to attend but are available the day after.
    We agree to host them at our place. Despite my lingering discomfort, I take another painkiller to ensure I can focus on our sex escapades, without being bothered by some dull ache. 
    When they arrive, we share drinks, reminisce about our previous encounter, and as we rise to our feet, the husband surprises us by pulling down his pants and leading my girlfriend into the living room.
    
    We switch positions with the wife, so I kneel on the floor and begin to pleasure her orally as she leans back into our armchair. I see my girlfriend sucking off the husband's huge cock, kneeling on the ground while the husband is sitting and laying back on the sofa.
    She stands up, not letting go of his cock and guide him to the kitchen by his huge member, that is still soft, but huge.
    
    The husband stops and interrupts me and his wife, asks me lift my butt and him my back. Initially taken aback, I comply.
    He wasn't interested in fucking my ass, rather, he noticed a small bruise on the underside of my scrotum and wanted to check it out. 
    Both of them being doctors, we decide to stop the activities and they suggest I visit the emergency room for a thorough check-up.
    I mention that I had been experiencing some discomfort for a few days, but the painkillers had alleviated it.
    
    We head to the ER, where I am diagnosed with bilateral testicular torsion that had gone untreated for nearly 2-3 days.
    Unbeknownst to all of us, the painkillers were potent "industrial-grade" ones, not the usual over-the-counter variety, my girlfriend takes them for her headaches since she was a teenager and it did not occur to her that they were special at all.
    I am undressed, provided this weird white gown, and then placed on this bed with wheels.
    I am rushed into surgery to untwist my balls and "sew them down" or whatever.
    This is the ER and my country is not the wealthiest country, so they give me a few shots, into my waist, pubic area, near my ballsack.
    It is local anesthetic.
    
    I wait in the room with 2 nurses who reassure me that this is a routine procedure and I should not be afraid of anything, as they take of the gown and place me in this half-upright position, keeping my legs open.
    The doctor arrives, she explains the procudre, they will cut open my ballsack, untwist my balls, check for damage and then sew my balls to the side of my scrotum so this can't happen again, as it can reoccur more easily once it happens appaerently.
    She then grabs a scalpel and cuts a fairly large cut on the right side of by sack, I can see all of this from the reflection in the lights above me, they placed a cloth over my knees so I could not see much of what was happening.
    I can barely feel anything, mainly cold so it is not so bad, she is pushing and fumbling around as my right ball "pops" out of the cut, can't really explain it well, but it was really sudden, and with a little blood. I do not remember anything else, as I pass out at this point.
    
    When I wake up, I am feeling numb and disoriented, my girlfriens is besides me and her kiss reassures me before she leaves to fetch a doctor.
    The doctor enters and delivers the devastating news that my testicles couldn't be saved due to necrosis, necessitating a "double orchiectomy" or in other words castration. 
    The painkillers were strong enough to delay the ER visit by a few days, resulting in my testicles dying.
    
    This marks the beginning of a 5-6 month period of depression and therapy.
    Remarkably, my girlfriend remains steadfast, and the other couple also supported by me, playing a role in my recovery journey. 
    Reflecting on the experience now, I find it strangely arousing and horrifying how I was castrated by a huge cock.
    We haven't had sex since the last encounter, but who knows what the future holds.
    Currently, I getting TRT testosterone replacement therapy, and life seems to be returning to normal.
    
    I consider myself fortunate; my girlfriend is incredible, and the other couple even assisted us with bills and such. 
    It feels like a blast from the past. However, I can't help but notice that my cock appears slightly smaller now, it might be the lack of balls, or just my psyche.
    
    Moreover, I might not be able to get a prosthetic because in my country, it's classified as plastic surgery, and the government doesn't cover it. Honestly, with my humiliation kink, I'm a bit intrigued at the thought of having sex with the couple again, although, I'm not entirely sure how I would feel about the cock that essentially emasculated me. 
    
    It's a mix of allure and horror in my mind.