Luke's Big Butt Changes Ch. 07

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I did what Doc told me to do, putting my legs into those weird stirrups, which he then positioned to lift my legs up and push my ass so it was just hanging off the edge of the exam table. I felt awkward and exposed in this position - the stirrups locked and wouldn't budge an inch, which made my cheeks spread and exposed my winking hole to both Coach and Dr. C.

Dr. Carson gestured towards the square container with measurements on the side which he positioned right under my ass. "This is to measure Luke's expulsions. I need to determine the severity and collect samples. What you are experiencing is the natural lubrication that the anal tract produces. In your case, as is the case in my other patients, your bodies natural production is greatly increased, and that becomes even more pronounced when experiencing sexual arousal.

I felt Carson's hands on my globes, pulling my ass so it was positioned where he wanted it. I had to admit, feeling those gloved hands on my ass cheeks just did something for me. I didn't realize how badly I wanted somebody to just grab it until now, that was how desperate I was. I was so embarrassed when I let out a shuddering moan as Carson's fingers sunk into my flesh.

"Mmmm fuuuuckk..." I moaned, as I looked towards Coach. His bulge was crazy thick, jutting out of his shorts, and the sight of it made me arch my back as a big glob of juice dribbled out of my hole and splattered into the container.

"Please lie back, Luke. I'm going to start stimulating your anus to test your reaction. Many of my patients find that digital stimulation of the prostate can provide some relief." I bit my lip and grabbed onto the sides of the table as Carson started poking at my hole. Considering how lubed up I already was, I wasn't surprised when after poking and prodding my pink ring, he slid his finger inside effortlessly. Shivers ran up and down my spine, my eyes fluttering, as Carson sank his finger into my pussy.

"Mmm yes, Doc, just like that..." I moaned once Doc buried his entire finger into my hole, right to the knuckle. It didn't hurt at all, just the opposite. I was already seeing stars after having just one finger inside me!

"I see your anus is experienced in taking insertions," Dr. C said with no emotion. He pulled his finger out, leaving just the tip inside. That feeling of emptiness after finally, FINALLY, having something inside my ass was more intense than ever. I NEEDED to get filled, no - stuffed. I was whimpering like a hungry puppy, shifting my hips a little to let Doc know I needed more fingers. Luckily, he understood exactly what I wanted, pressing two fingers to my hole, my pink ring easily spreading to fit the increase in thickness. After bottoming out two fingers deep, Carson started to pump his fingers in and out, in and out of my hole. With every pump, more of that weird, wet lube slipped out of my hole and dripped into the bucket.

Suddenly, Doc Carson completely pulled out his fingers. I started whimpering again, my chest rising and falling in panic. I didn't want him to stop. "Doc, please, wait, put them back in, that was working, I swear!"

"Hm....slight elongation of the anus. It seems the disease has progressed to a point where digital stimulation alone would be insufficient," he tapped my hole and looked over at Coach. The slightest touch made me shake and shiver, sending out a gush of goo from my hole directly in the bucket. I wish I could make Coach look away....I didn't want him to see his star player looking like this. Coach was speechless and it was hard to read him, but he watched, wide-eyed, as Doc Carson moved his chair over to grab something from a nearby drawer.

"Based on what you have told me, you are used to something quite larger than a few fingers, correct?" The only thing I could do was nod frantically. "In that case, I believe the area where you require stimulation, what I call the Carson spot, is far deeper. Prostate stimulation alone is not having the reaction that I had hoped. The body can build up a tolerance to it. I have some medical instruments I'd like to try. May I proceed?"

"God, yes! Anything!!" I moaned. When did I start acting like a cheap slut in a bad porno?

I looked over at Doc Carson, who had pulled out a drawer where several objects were arranged next to each other. Those were the strangest 'medical instruments' I've ever seen. There were six of them, all smooth black cylinders, and incredibly thick, thicker than my wrist. Each of them had a tapered head that bulged out a bit. They had different lengths, and were arranged shortest to longest. I gulped. Were those...? No way, they couldn't be.

"Holy fuck!" I heard Coach swear, which was pretty rare. He was usually so clean cut! Suddenly Coach got defensive, his jaw clenched. "Carson, what the fuck do you think you're doing?"

Carson didn't even flinch as he pulled out one of those objects, the one in the middle, then turned towards Coach. "Thomas, I understand these may have some superficial similarities with objects intended for sexual recreational use, but I assure you these are instruments for treatment made with the highest grade of medical silicone."

Coach was still on edge, but he couldn't take his eyes off the object in Carson's hand. I couldn't either. Just the sight of it... fuck, it made my hole clench and my asshole flutter. I couldn't help but think it reminded me of Sammy's cock - not too long, but crazy thick. Or even Coach's cock, which was now full-on tenting in his shorts. Coach's eyes were full of protective panic - his fists balled up, like he was ready to fight Dr. C.

"Coach...fuck please, Coach. Just let him do it, I need this to stop!" I felt like a little kid begging Coach like this, but it was the truth. I needed this, more than anything else in my life. Not just needing all this crazy ass stuff to stop, but needing to have answers. Luckily, Coach seemed to realize what I was saying, and he took a few steps back until he was leaning against the wall, giving Carson a small nod to go ahead.

Carson brought up that black cylinder up against my hole. I didn't even feel him push; it was like my hole was so fucking hungry that it just sucked it right in. My ass muscles worked to pull it inside of me, like it just needed to get stretched and stuffed. I was amazed at how easily I was taking it. Carson barely tapped on it a few times, and then it seemed to hit a snag. It was pressing up against a spot inside me that kept making me see stars. I wanted it to go deeper, but I just couldn't get it to budge.

"And how do you feel now, Luke?"

"Oh god, almost!! Fuck it's almost there, it's like... FUCK, I can feel it brushing against it but it's just not HITTING it!!"

I heard Doc make a small "hmm" and write something on his pad before grabbing the bottom of the cylinder and wordlessly driving it in the remaining inches inside me. The bulging head of that black object pushed past that spot inside me, and then it hit something else. A wall. I arched my back instinctively and threw my head back.

"FUUUUCK!! DOC, THERE!" I screamed, remembering the last time I had something so big inside me, where nerdy Mark helpfully explained that I had a cervix.

Suddenly, Carson pulled that dildo- I mean, medical instrument, from my hole. And that feeling of hunger and complete emptiness just made me rabid, like a switch flipped. My body was thrashing, I wasn't in control, I was begging for more. "GOD! NO!!! PUT IT BACK, please, GOD, Doc, please put it fucking back, please please please!"

"Please be patient, Luke." Carson went back to his cabinet and pulled out the largest medical instrument he had. It was MASSIVE. Almost as big as Mark, actually. In fact, I think it was almost the exact same size as Coach. Bigger than a ruler and thicker than my wrist. One part of me was horrified that Doc was gonna put that monster inside me, but another voice was chanting in my ear for him to do it.

Doc grunted as he lined it up with my hole, and then with one rough push, the entire length of it was swallowed by my hole. "FFFFUUUUUCCKKK!!!" I exploded with ecstasy as that itchy spot, that hungry button deep in my cunt was FINALLY prodded and poked. Just like when I took all of Mark's cock, my eyes rolled back and I saw white spots in the ceiling. My body arched and I instinctively pumped my hips back, trying to match Doc's strokes as he pushed and pulled the not-dildo inside me.

"FFffffuccccck!! Doc, so deep!!"

"Please steel yourself, Luke. Just a bit more." Doc continued to grunt and he sounded out of breath. Using that massive, heavy thing must be quite a workout. I could tell he was getting tired - did this mean he was going to stop?

He pushed with all his might, his arm buckling for a moment as he hit some resistance inside me. "Are you all right, Luke?" the doctor asked.

"Oh... GOD!!! Doc, right there!! Almost there!" I moaned, and arched my back and bucked my hips to push the dildo in deeper. I gripped the sides of the examination table, white knuckling it as I got closer and closer...

"Fuck, Doc, am I gonna have to hold him down? He looks like he's possessed!" Coach's voice came out of nowhere, full of concern. I had kind of forgotten that the whole time he was watching silently. Fuck, I'm so embarassed. What must he think about his star player having this weird disease and needing an old guy to shove a not-dildo inside him. I glanced over to where Coach stood, and my jaw dropped in shock. Coach's bulge wasn't a sausage barely contained in his shorts. It was a full on-tent, a rock-hard rod sticking straight out, pushing his shorts the limit. In fact, I spotted a hole at the tip of the tent - and the tent made his waistband pull down, so I could see his sexy dark blond pubes. At the very tip of his tent was a large, growing wet spot. Damn, Coach precums a LOT.

Something about seeing Coach's cock changed me. I closed my eyes and while Carson kept pumping inside me, I imagined it was Coach's cock instead. Him holding me down with his strong arms - as his fat, thick cock stretched to my limits. His gruff, deep voice telling me I'm doing a good job, that I'm his star... FUCK!

"Doc, please... you're so close!" I didn't even recognize the voice that came out of my mouth. It was strained into a high-pitched whine. I didn't feel like an alpha jock stud, I felt like a hungry, no, starving needy little bitch.

"Luke, please describe how you feel. It is essential to my understanding so that I can treat you."

I moaned again, unable to think clearly. Did Doc really expect me to be able to form words while he pounded my hole into oblivion? It didn't help that every time I felt like I could speak, Carson would withdraw the black rod out of me and then SLAM it back in. I felt my poor, formerly tight pink ring expand like an elastic, the force of Carson's blows knocking the wind out of me and forcing my head back. Every time Doc withdrew the dildo, the "head" of that not-dildo was left inside my hole hole, and then immediately forced back in. With each pump, more and more of that lube would churn out of my hole. I glanced over at Doc and felt so bad that his crisp white lab coat was getting ruined by my ass lube.

"Thomas, if you don't mind, please restrain Luke. I am unable to continue treatment if he continues to flail like this." Coach just stood there, unable to take his eyes away from my hole. I could tell he was worried about me, but also clearly freaked out about the whole thing. But fuck, I just wanted Coach to help.

"Coach... please... I need..." I didn't know how to say what I really needed. Because 'your dick' would be a fucked up thing to say, even though I knew, deep down, that was what I really wanted.

Coach came back to reality and walked slowly around the table so that he was behind, like when he spots for bench press. He hesitated as he got closer, then put his powerful hands on my shoulders to hold me down and stop me from thrashing about like an animal. Even as strong as he was, he grunted and struggled to hold me down. But, that put him in the unfortunate position of his huge tent jutting out right over my face, like a tower casting a shadow. Looking up at it, I became laser focused on Coach's pumped up dong. The way the shorts were now riddled with holes, letting me know that Coach was going commando underneath them and I could see flashes of bulging veins on his shaft. The way his bulbous cockhead was soaking the material with precum, oversaturated to the point where a single droplet leaked through the thin material and dropped, so perfectly, on my upper lip. I instinctively swiped my upper lip with my tongue, the taste of Coach's precum hitting me like a blast of cold water. Every time I would thrash, I'd throw my head back and make contact with Coach's rock hard rod, driving me even more wild.

"FUCK! COACH! DOC!! There's a fucking... there's fucking SPOT deep in there. You're so close, GOD, Doc please hit it!! Pound it!!! It needs to be hit, it needs to be SMASHED!!"

Doc Carson SLAMMED that dildo in one last time, pressing as hard as he could, the pressure inside me building, building, until I felt like I was about to burst. My body shuddered as I felt a small squirt of juice gush out of me and into the bucket below. It was like how I felt when Sammy or Mark had dumped their loads inside me but... a lot more muted. Not enough.

I tried to catch my breath, coming down from such an... orgasm? But I definitely didn't cum from my dick. What did that say about me? Another voice in my head spoke up, saying that I have a pussy.

"That is not an uncommon reaction, Luke. It is similar to a prostate orgasm, when the tension is released from the area of your rectum that is affected by the disease. My patients describe it as a pleasurable sensation."

"Well, thanks Doc. I think that really did the trick. I guess-" I couldn't even finish my sentence, because my body had an intense shudder and then a big glob of juice dripped out of my hole. Within a few seconds, the familiar drip drip of my juice filling up the bucket had returned. What the fuck?

"Doc, what the hell! You said that was supposed to work."

"Interesting... you may have a more severe case than I originally surmised." The not-dildo was all the way inside me, Doc took his hands off it, but my hole stayed clenched around it, squeezing, like I was nursing on it. "This is what I was afraid of. It seems you've progressed to a point where this instrument is insufficient in treating your symptoms."

I let out another one of those high-pitched whines. I was going fucking crazy, I just wanted to get that relief, that feeling when Sammy or Mark came inside me, FUCK! Hearing Doc say that his medical instrument thing wasn't going to cut it almost made me cry.

"Not to worry, Luke. Thomas, would you mind assisting me with Luke's treatment? When the body has developed a tolerance to prostate stimulation, there is one more method to try. This is guaranteed to provide long-lasting, albeit temporary relief. I have had a 100% success rate. The method is to inject fresh sperm directly into the deep recesses of Luke's anal canal - where it can act like a salve on soothing the sensation inside of him."

Coach took several steps back and I heard him back into the wall. "What... what the fuck?? Do you mean...?"

"Yes, that is correct. Insert your penis inside Luke's anal in its entirety, then ejaculate inside. I can see that you remarkably large genitalia, and should have no trouble reaching the deepest recesses of Luke's anal tract."

"Please, Coach... please... anything... I need some relief, I'm fucking DYING here!"

Coach was silent for several minutes. I craned my head back to take a look at him. His face looked pained, probably because of how hard his dick was. It somehow had still not gone down, despite all this weird stuff. Or wait... could it be that Coach was this hard because of... me?

"Ohhhh gooodddddd Coach pleaasseeee, PUT IT RIGHT. FUCKING. THERE!!"

"I-I can't. Luke is... I can't cross that line. No, no. I won't do it, I can't be here for this."

Coach scrambled away from me, avoiding me like I had the plague (didn't Doc say that it wasn't contagious), tripping into the door and fumbling for the handle. As soon as he swung it open, he came face to face with that huge black nurse from earlier.

"Ah, excellent, Eric, please assist me in treating Luke."

Eric walked, nudging past Coach, who just stood there flabbergasted. Eric was always smiles as he spoke to Carson. "Oh yeah? Does he need an injection?"

Carson's face didn't even budge, but he did give a nod. "That is correct. You are quite experienced in administering treatment, so I will leave the rest to you while I take observatory notes."

Doc Carson turned to me. "Eric is very well-trained in treating patients of your nature, Luke. Although his methods may seem unorthodox at first, I can say with confidence that they should relieve your symptoms for quite some time."

Carson turned to Coach. "Thomas, I imagine you may wish to not witness the treatment. You may leave if you so choose."

Coach just stayed there, shell shocked, staring at my hole, then flicking his eyes over to that Eric guy... and I could see his eye drop to the guy's crotch. He just shook his head in disbelief. "I should probably stick around... I should know what kind of treatment Luke needs."

Eric spoke up. "You got it, Dr. Carson. Luke, you ready to be treated?" he said, as he winked at me and reached into the waistband of his scrubs... hauling out an enormous black cock that made my eyes bug out. It was... somehow even bigger than one of Doc's medical instruments. In fact, I'd say it was nearly as big as Mark. Yet, it somehow seemed so intimidating. Eric was friendly and easygoing, so it made me a little relaxed, but I couldn't help but feel like a cock like that was a dangerous weapon in the wrong hands. And I just hoped Eric had the right ones.

Eric grabbed the base of the medical instrument-dildo-thing and pulled it out of me like a magician pulling out a tablecloth. The heavy wet instrument fell onto the floor with a heavy, wet SPLAT. I arched my back, overtaken with the emptiest feeling I've ever had. Like there was a cavity inside me, that I was incomplete without having it filled. I needed it. I needed Eric's cock inside. I needed cock, period. And cum, fuck, I needed cum. Every time Sammy or Mark dumped a load inside me, it was like heaven. My hole was still quivering and open, unable to close, as I felt another glob of lube drip out of it, down my taint, and into the bucket.

Eric grabbed his cock and gave it a few slaps against my ass to get it hard. Then, he lined up his cockhead, the size of a small apple, right against my hole. Feeling the soft, spongey cockhead against my ass ring gave me a pleasurable teasing sensation. "Alright, I'm gonna begin inserting, Luke." I nodded, trying to bite my lip to hold back my moans. Inch by glorious inch he began to sink that mammoth cock inside me, stretching me out again. It was thicker than Doc's not-dildo, and longer too, and as he pushed it inside me, I could feel my ass clamping down on his dick. It was like I was hyper-sensitive, to the point where I could feel the veins on his dick pressing against my ass walls.

"FUCK, PLEASE!!" I was unable to hold back anymore, and a slutty moan escaped my lips. "FUUUUCK!!"

Suddenly, Eric stopped. "Dr. Carson, patient is exhibiting severe tightness. I'm going to have to use force to complete the insertion." Wha...? What does that mean?

"You may proceed, Eric."

Eric lowered his body so that his chest was pressed up against my chest, his massive biceps going around shoulders and holding my head down, his mouth right next to my ear. He started to whisper, just loud enough so that only I could hear.