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Mom's Boyfriend: Sex Researcher

Mom's Boyfriend: Sex Researcher

by Greenbriefs
19 min read
4.75 (57200 views)
18-year-oldanalgay analage differenceage gap
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Tyler rubbed his eyes and pulled the sheets off. He was a skinny boy and shorter than average for an eighteen year old. His messy, dark hair hung over his eyes, as if he were trying to hide himself from the world. Having just woken up, he was only wearing a pair of snug boxer briefs. The brightly-colored stripes helped define the curved mound of Tyler's morning erection, which was more than a handful. Although the young man was quite slender, the full pouch of his underwear proved that he was quite well endowed.

He stretched out his slim form. His bare arms, chest, flat stomach, long legs all flexed in unison, then he slumped back into the comfort of his sheets. His hand wandered to his stiff bone, gripping it through his underwear. He was so horny (as always), but he didn't have time to jerk off.

The sulking teen dreaded the task that awaited him. With graduation just behind him and his summer job before college just ahead, Tyler wanted to savor this brief moment. He should be sleeping in. But he had responsibilities that he could not escape.

Just then, Tyler's mother bellow up the stairs. "Tyler, get up, NOW!"

Tyler signed. His mother had started dating this doctor, Bill, a few months ago. He worked at some secretive research facility. He was nice enough. Tyler got along well enough with him, but he hated how his mom was so obsessed with the man.

Then, a few days ago, the doc approached Tyler's mom with a request. He was going to be running a medical trial that involved some experimental examination procedures. The trial was focused on teenage boys and the doc asked her if Tyler might join.

Of course Ms. Henderson was falling over herself to volunteer Tyler for this trial. Desperately wanting to impress her doctor boyfriend, she gleefully offered her own son as sacrifice. Tyler had no say in the matter. Even though he was eighteen now, he was still dependent on his mother, so he had to do what she said. Tyler was just a pawn in his mother's love games.

Finally, the horrid morning had arrived. On a Saturday, no less. Tyler's mom was eager to drive him to the facility and hand over her son to her mad-scientist boyfriend.

"I'm not going to ask you again!" she shouted.

Tyler dragged himself to his feet and down the hall to the bathroom. With a dreadful day of the unknown awaiting him, Tyler's morning boner shrank away as he showered. Returning to his room, he pulled on his clothes and huffed down the stairs. After a quick breakfast, they were off. They drove a while to an unassuming office park. With butterflies in his stomach, Tyler studied the nondescript building that his mother was headed towards. It was maybe four stories, but had no windows.

They parked and got out of the car and Tyler's mothers warned, "Behave yourself. Be polite. Do whatever Bill tells you and don't complain. Don't embarrass me."

"Yes, mother," Tyler groaned sarcastically, brushing the hair from his eyes. He had reached the front door and pulled it open.

"I swear, if you give Bill any trouble--" her angry tirade was interrupted by a handsome, smiling man.

"Hello," Bill said, leaning in for a kiss from Ms. Henderson. "I'm sure Tyler won't be any trouble at all. Right?" He turned towards the teenager, his soon-to-be test subject.

Tyler managed a smile.

"Alright, sweetie," Bill said to the woman. "I'll see you this evening. Don't worry. Your son is in good hands."

"I have no doubt," she said fawningly.

After Tyler's mom left, Bill guided the 18 year old down a long corridor. They passed an occasional stranger, each one cordially greeting Bill and smiling in Tyler's direction. Otherwise, this place seemed rather deserted for such a large facility. The teen felt all alone in the strange building. But Tyler found it easy to focus on the tall, broad-shouldered man leading the way. He had spent plenty of time with Bill at this point, but usually in the company of his mother, and otherwise in a fully public space. This first time with Bill totally alone was awkward for Tyler. What sort of things was Bill going to do to him? His tummy churned at the unknown.

After a few minutes of walking around hallways and riding elevators, Tyler realized he had no idea where he was inside this place. Bill stopped at an unmarked door, produced a key and opened it up. Inside was very plain room. In the center was a waist-high examination table with a padded top. At the edge of the table, a metal tray was laid out with some small equipment and a digital camera. Some simple metal chairs lined one wall.

The walls were mostly bare, except for a few black, shiny circles embedded in them at even intervals. The wall opposite from their entry had a large mirror. Tyler noted the reflection, where tall, handsome Bill towered over Tyler's more delicate frame.

"This is where your exam will take place," Bill said, busying himself with his phone. "We'll get you checked in and then we'll start."

"Thanks, Bill," Tyler said. He felt like a dummy for saying "thanks," but he didn't know what else to do as he nervously waited.

"Eh, yes, about that. I don't want our personal relationship to get in the way here. Please call me Dr. Hertz while we're in this facility. I'd like to maintain a level of professional distance while we're working together today. Is that okay?"

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"Sure," he murmured. He was irked at the disparity between them. Tyler was clearly subordinate in this situation, but being made to call this man "Dr. Hertz" was salt in the wound. They had become familiar with each other. Bill had previously tried to ingratiate himself with Tyler, fostering a sense of camaraderie between them. And the attempt had succeeded somewhat, as Tyler really didn't dislike the man at all. But he felt humbled at this name request. There was no doubt; they were not equals in this building.

"Okay, great," Dr Hertz said, smiling, tucking his phone away and looking at Tyler. "Now, I need you to get undressed." He stood still, staring at his subject.

Tyler had always know that this was supposed to be some kind of "examination," but he had no idea the true nature of Dr. Hertz' intentions. This was another humiliation. He knew this man, and would very likely see him again many times in the future. They had shared meals. Tyler had been to his home. The doctor was in love with Tyler's mother, and would likely be a part of Tyler's life for the fordable future, so stripping off in front of him was distressing.

Tyler felt very shy with the doctor watching so closely. He started by pulling off his T-shirt and then unzipping his fly and pushing his shorts down his slender legs. He felt a bit foolish, having forgotten to remove his shoes first. He bent over, fumbling his shoes off, then his shorts, until he was only wearing his underwear and white crew socks. The bright blue, very short trunks clung tightly his hips, cupped his package, and hugged the twin globes of his butt.ย Tyler hadn't exactly suspected that he'd be taking his clothes off, and now his choice of underwear left him feeling very exposed, especially under the unblinking gaze of Dr. Hertz.

"Very nice, Tyler," the doctor said. He stepped closer to the teenage boy and placed his hands on Tyler's chest. "Oh, I should let you know," he said as he spread his fingers across the Tyler's lightly developed pecs, "...that we'll be filming these sessions so that we can further analyze the data we collect from you." He gesturing to the mysterious black eyes on the walls, and some and on the ceiling that Tyler hadn't noticed.

It was bad enough being in his underwear in front of Dr. Hertz. But there were also cameras? How many strangers were going to see him like this?

"I hope that's okay, Tyler," the doc followed up.

"Emmm, yeah, I guess." He really didn't feel comfortable about it, but he remembered his mother's warning.

"Wonderful," Doc said. "You have a nice chest." He rubbed his thumbs over the boy's perky nipples. Tyler's body twitched as the unexpected stimulation. The man's big, warm hands moved lower, onto his abdomen. "Flat stomach. Good. Do you work out?

"N-no," Tyler stammered, disbelieving. What kind of question as that? He was obviously a scrawny kid, Tyler thought.

"Don't sell yourself short," Dr. Hertz said, sensing Tyler's resistance. "You're a very handsome young man."

Tyler's heart beat faster under Dr. Hertz's scrutiny. The man reached over and grabbed a measuring tape from the tray and extended it along Tyler's body at seemingly random places. From shoulder to shoulder and collarbone to navel. He measured around the lad's hips, then from his chin all the way down to his groin. His hand nuzzled right up to Tyler's pouch, and the boy turned red with insecurity. He staring straight ahead, fighting to stay calm as the doc boldly measured the curve of the teen's mounded underwear in great detail. Before the doctor was finished with this area, every centimeter of Tyler's dick and balls had been brushed upon by his wandering finders.

Then, Doc moved to the back, his large hands covering Tyler's buns. He felt a squeeze, followed by an affirmative noise from Dr. Hertz, who was tapping his results into his phone. Another full-handed grip on each butt cheek followed, and then the doc moved down to the teen's legs.

His hands roved along the slender limbs, alternating with the measuring tape. Down his calves, and back up to his thighs, then back around front. It was almost like getting a massage. But Tyler's concern grew as he glanced down at himself. His little shorts had been filling up with his teen bone for some time now, and they were seriously protruding in front.

Without remark, the doctor again brought the tape to Tyler's trunks. The shape of his anatomy was plainly visible through the contours of the figure-hugging undies. Tyler was offering a good length of stiff cock for the doc to measure. He felt the man's hands crossed the full stretch of his boner, thoroughly noting each stat. His balls were studied, both with the measuring tape and with Dr. Hertz's hands. Then special attention was given to the tip of Tyler's tool. The ridge was discernible, as evidenced by the doctor's fingertips tracing along the outline.

Fuck, Tyler cursed to himself. He was dying inside. The doctor was doing a great job of getting his teen subject nice and hard. He felt himself swelling up more as Doc's fingers caressed his glans. His thing extended off to one side, with his cock-head bulging and wet.

At last, Dr. Hertz stood up and Tyler allowed himself to relax just a bit. He believed that he had every inch of his body measured now. What could possibly be next?

"Excellent," the doc mumbled as he taped a few additional notes into his phone before looked up at Tyler. "Please remove your underwear."

Any icy web of fear spread through his chest at these words. Since being asked to strip down, Tyler had anticipated this moment. Reluctant to relinquish the last of his dignity, especially considering his "state," Tyler hesitated. He brought his hands to his waistband with a slowness born of trepidation. He pulled at the elastic band and peeled his trunks down. His dick and balls expanded out into the free space as he pushing his trunks all the way to his ankles, then stepped out. Except for his socks, Tyler was now naked. He dared to shoot a glance at the mirror and saw his profile, with Dr. Hertz watching him closely. His teen cock arched out heavily from his narrow silhouette, almost fully erect from the doctor's massaging. Tyler's face was as red as a cherry, knowing that the doctor would clearly see his arousal. And the cameras! Tyler thought. His shame was on display for the myriad recording devices around the room.

Dr. Hertz surveyed the nervous young man standing in front of him. The shorter, slender teenager avoided the his stare. Doc studied Tyler's naked form, observing Tyler's inner fight to remain uncovered. The kid's arms hung awkwardly at his sides, leaving his teen cock and balls open to the older man's acute visual inspection. Dr. Hertz placed a hand on Tyler's shoulder.

"Let me tell you a little about the nature of this study. A few of us here at the Institute are interested in the nature of teenagers' sexual development." His hand moved down to Tyler's chest.

"We're gathering 18- and 19-year-old subjects with the intent to study their bodies, query their preferences, and test their limits, physically and psychologically." His touch was now gliding down Tyler's slender flank.

"So this is a, uh, sex study?" Tyler asked.

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Dr. Hertz chuckled at Tyler simplistic summary. "Yes, I suppose you could call it that." His hand was at the boy's hip.

"I'm sorry. I know this is a sensitive subject for people your age. You're still getting used to your growing body and you may have insecurities. I assure you, Tyler, I hold no judgment over anything that happens here today, or how your body reacts to my stimuli."

He was now openly brushing along Tyler's balls and stiffening cock. The teen's chest was heaving with deep, quick breaths. Conflicting emotions of embarrassment and exhilaration melded inside him, creating a new, powerful fervor. He barely heard the man's words any longer as he plummeted into the depths of this man's manipulations.

"As a matter of fact, I think we're both going to rather enjoy our time together. But I don't want you to feel at a disadvantage, so I'm going to undress as well."

Dr. Hertz pulled back, withdrawing from the teenager's swollen sex organ. Tyler watched, dumbstruck, as his tormentor loosened his tie and unbuckle his belt. The boy was still struggling to process the new information about this examination session, when Dr. Hertz shucked down his slacks and pulled them off his feet. He unbuttoned his shirt, slipping it off. Lastly, he pulled his undershirt over his head. Tyler's eyes were glued to the doctor, tall and fit, in his snug pair of briefs. The teen watched Dr. Hertz walk over to a nearby chair and neatly place his clothes on the seat.

As the fit man returned, Tyler gazed at the doctor's fat sausage distending his underwear. He could see the thick thing reaching lengthily off to one side, with the rim of the doc's cock-head easily discernible. Jesus, this guy was nearly as turned on as Tyler was.

"I want this to be a comfortable experience for you, so if you should feel the desire, please examine my body as I examine yours."

Tyler had to tear his eyes away from the bulging pouch to look at the rest of Dr. Hertz's body. He eyed the man looming over him. He obviously kept himself in excellent shape. His chest was broad. Salt-and-pepper hair was scattered across his mounded pecs. His abdomen was home to a nicely defined six pack. His torso was long and lean and muscled. Biceps and thighs looked strong.

Sweat beaded at Tyler's forehead as he drank in the sight of the very attractive, hunky, older man. The teenager noticed the doctor's smile. The man was watching as Tyler ogled him.

Ashamed, Tyler averted his gaze, but just then, the older man fell into a deep squat, placing his hands on the boy's thighs. He moved upward, over his groin, past his dick. Tyler's body was fairly smooth, but the base of his cock was hidden in a bush of dark pubic hair. The doc moving his fingersย through the forest of curly hair, circling around the root of Tyler's cock. His other hand palmed his fuzzy balls. This bare skin contact was exhilarating.

Tyler's face felt so hot. He was abashed at the doctor's rubbing and groping. His dick was standing straighter now. His body wasย reacting positively, even if Tyler's mind was filled with misgivings.

The first hand moved away from the bush and Doc's fingers dragged along the underside of Tyler's tumescent tool. With each second, Tyler grew stiffer under the doctor's comprehensive observations. His youthful engorgement rose up towards the ceiling, long and broad. The ridge of his purple knob flared out and the rounded cap was firm to the touch.

Precum seeped from his slit. Dr. Hertz placed the pad of one finger at that wet spot and circled it around Tyler's sensitive cock-head. The boy's smaller body jerked and he moaned involuntarily.

"Very good, Tyler," the doctor cooed gently as he continued to tease the young man's organ. "These reactions are very valuable to my data collection. Please don't hold back."

Holding back was all Tyler wanted, but he didn't have much choice. Under the doctor's skillful handling, Tyler's inexperienced teenage body responded automatically. He grunted and spasmed as the fingers, slick with his teen-boy precum, slipped around his swollen knob.

Even through the fog of his satisfaction and embarrassment, Tyler could see that Dr. Hertz enjoyed his work. This wasn't a typical, detached medical exam. That man showed special interest in this procedure.

While one hand was busy with the kid's throbbing meat, the doc moved his other hand up along Tyler's slender side, his thumb stretching up to the boy's nipple. The doctor toyed with the tiny pink nub, eliciting even more untoward vocalizations and bodily writhing from poor Tyler.

"Mmmm, yes," Dr. Hertz purred. "Tyler, you're doing very well." He delicately drew his fingertip over the teen's dribbling slit, and down the thick ridge on the underside of his stiff boner. "Your penis is spectacular, Tyler. I could study this for hours."

"And your body..." he followed up. His other hand spread across Tyler's flat chest and down his abdomen, then back up his slim waist again. "You're the prefect specimen." Both hands were now fully exploring Tyler's flesh, legs, arms, chest, stomach, shoulders, back. "I'm so happy you agreed to take part in my experiments. Your body is going to be of great value to me. And to my science."

These remarks sent another flush through the distraught young man. He liked being alone. He didn't like attention. He would never have chosen to be here, but his mother had made him. And her boyfriend had stripped the shy lad completely bare, his petite build exposed and helpless. The timid teen was in turmoil as the larger man touched and groped at every inch. He was the center of attention, not only for the doctor, but all the cameras as well. Tyler's humiliation was being recorded for unknown eyes. He imagined strangers sitting at computers glaring at the videos of his naked body. He thought of countless university students studying his embarrassed arousal, his stiff cock immaculately captured for the well-being of medical science.

Just when Tyler thought it couldn't get any worse, Dr. Hertz's large palms slipped down his back and closed around his cute, bare buns, squeezing and kneading the fleshy mounds. Fingers crawling between his cheeks, moving deeper, until Tyler felt two fingertips pressing at his secret spot.

"Uhh!" Tyler involuntarily moaned and his cock jolted at the contact. God, the doctor's face was so close to Tylers leaking cock, he could feel the heat of his breath. As he continued to drip pre-cum, the doc's fingertips slowly circled around Tyler's puckered opening. Tyler was mortified. His dick was betraying him. His whole body, slight as it was compared to Dr. Hertz, was a shining red beacon of his arousal.

One persistent finger had gathered up the slight sweat from Tyler's crevice and pressed insistently at his pucker. A broken whine squeaked from his throat as his tight hole spread open around the thick digit. Just an inch or less. The doctor relentlessly tested Tyler's barriers.

"Ohh, yeah. Such an excellent anus, Tyler," Dr. Hertz said as he pried at the boy's hole. "Perfectly tight. But also welcoming."

As bizarre as it was to have another man's fingertip up his butt, Tyler nonetheless found himself about to burst forth a load of cum. The poor youth was boiling over with strange feelings. But just as his mental circuit breaker about to trip, the doctor slipped away from that forbidden frontier.

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