m/m The Testosterone Effect (Part IV)

[brstealth13]

The Testosterone Effect

Part IV: New Friends

 

Continued from: https://muscle-growth.org/topic/6138-the-testosterone-effect-part-iii/

 

Blake's roommate, Matt, had been avoiding him ever since their sexual experience a few days ago. In fact, Matt had finally worked up the words to tell Blake his thoughts about the whole incident, to tell him that he didn't want any awkwardness between them and that he just wanted to be friends... but Blake was nowhere to be found. In reality, of course, Blake was at the research lab.

 

Matt had grown since having sex with Blake, but he didn't really consider the cause of this growth. Matt just felt fortunate he had packed on a little more muscle - maybe now the fraternity he was interested in joining would be a little more accepting. He decided to text Sam, the fraternity membership coordinator, to see if he could have another shot.

 

"Hey man, i dont want to seem desperate, but I bulked up a little and was wondering if i could have another shot at the frat" Matt typed out. A response arrived a few seconds later:

 

"send photo"

 

Matt removed his shirt and pants and stood in front of a full length mirror in nothing but his tight grey trunks. He flexed a bicep and snapped a selfie with the other hand. At this point, Matt's body wasn't the most remarkably muscular, but he was no longer a weakling, or even average, by any means. Matt had strong muscles but lacked the mass and beefy quality that Blake (unbeknownst to his roommate) was beginning to exhibit. His dick, also larger since his time with Blake, was mostly soft but with his balls, formed a nice package and bulge in his tight underwear. He sent the picture off to Sam, satisfied with his appearance.

 

Sam received the photo and his eyes widened. "Hey men, check this out! One of our rejecteds stepped up his game!" He passed his phone around to a few other guys in the house, each one with a similar reaction of devious interest. "I want to invite him tonight," Sam said, fondling his crotch casually. "See if he knows what he's getting into." The other men nodded in agreement, each one wearing nothing but a tight white athletic jockstrap, sporting half-chubs in the package, as they split up to various rooms of the house. The men playfully slapped each other on the ass as they went off to prepare for the night's festivities.

 

***

 

Meanwhile, at the research lab, Blake had finally woken up from his 12-hour-post sex nap with Max. Sampson watched into the recovery room through a one-way mirror, chatting with a technician.

 

"Brian," he commented. Make a note that subject is awake at 16:25 and acting normally. I also went to check on Max - he doesn't seem to be harboring any special desire to see Blake. It's as if all his lust was all from the pheromones. Go in and give Blake the questionnaire, now, but be careful not to seduce him. We need to take measurements and give him a little rest before further physical tests."

 

Brian, a scrawny 5'10" scientist, nodded and made a few notes on his clipboard. As Sampson walked back to his office, the technician unlocked the door to Blake's room and entered.

 

"Hello there," he greeted the subject. "I'm Brian. We've got a few questions for you about what happened yesterday."

 

"Yesterday?? That was yesterday? How long have I been out for?" Blake asked, quite alert at this point.

 

"About 12 hours," Brian replied. He sat down on a stool next to Blake's bed. Blake was wearing nothing but a pair of blue briefs the technicians dressed him in as they moved him from the exam room floor to here, but his body was covered below the waist by a blanket. Brian marveled at his pecs, which were starting to gain some real beefy mass, but were still short in size of the rock hard globes many other men on campus sported. Blake's chest also sported a thin layer of light blonde chest hair, which was barely noticeable due to its light color. Darker blonde-brown hair sprouted from his pits, thick, bushy and manly, surrounded by a thick bicep likely capable of curling Brian the technician's weight, and then some, with ease. 

 

Brian was a little overcome with Blake's appearance, but the pheromones weren't even active. No, it was just a normal, run-of-the-mill attraction, Brian thought to himself. Blake was a really hot guy, and seemed sweet, and genuine, from the non-experimental observations Brian had made of him. He was infatuated with Blake not because of Blake's super-testosterone production scent, but normal, physical attraction.

 

Brian asked Blake a few questions - mostly about how he was feeling - he avoided questions about the sexual stuff, to avoid making Blake the slightest bit horny. "Can't compromise the integrity of the study," Brian thought. "Regardless of his my own feelings." 

 

Some time passed, and Brian was wrapping up the questionnaire. "One more thing," he said. "We'd like you back for another experiment. We're still working out the parameters but it should take a few days just like this one did. Would next weekend work?"

 

Blake cocked an eyebrow and flexed his pecs, casually testing his new found control over his muscles. "Another kinky experiment? Count me in! Maybe you guys can tie me up and fuck me senseless while I scream for mercy. Or you could send in a whole group of guys for me to play with. Or maybe-"

 

"Fuck," thought Brian. "His overactive imagination is going to hit him - and me - really hard if I don't get out of this room." But instead of bolting to the door before the pheromone production started, Brian smiled. Deep down, he wanted this to happen, research integrity be damned. He smiled and listened to Blake's sex ideas as his cock slowly hardened. The pheromones hadn't started yet, but Brian couldn't be moved from this spot no matter what. He inhaled deeply and waited for the wave of sex to hit him with anxious tension.

 

***

 

Matt arrived at the fraternity house, having received Sam's invitation and instructions to come by, alone, and not to tell anyone where he was going. He didn't question the frat's odd practices - many of the other meetings were done in secret - probably some freaky cultist tradition they had to upheld. As he was told, he walked around the side of the house to the rear basement entrance and produced the rhythmic knock Sam taught him to signal he was there for a frat meeting. After exchanging a few more corny codewords, the brother waiting at the door swung it open and before Matt could even see what was in front of him, a black sack was thrown over his head and his hands held behind his back by the guy who granted him entrance. He was led down the stairs with care, through the basement, pitch black in the darkness of his makeshift blindfold. His escorter shoved him gently and removed the blindfold and released his hands. Matt looked around - he was in what appeared to be a temporarily constructed booth of some kind. The house's basement was normally big, and spacious, but for some ceremonies, Sam had told him, the brothers used temporary walls they dragged in and set up. The room was pretty small, probably no larger than a closet, but enough for Matt to sit on the floor as he was told while his escort stood above him imposingly wearing a black robe with face obscured. The escort commanded, "Open the box," (he motioned to a small black parcel behind Matt) "read & follow the instructions." The mystery man closed the door to the "stall" behind him, and Matt heard it locked with a small click. 

 

"Great," Matt groaned to himself. "Hazing." 

 

He opened the box - inside was a dirty white jockstrap, complete with 3" waistband with the brand "Bike" proudly printed in the center. In truth, the jockstrap wasn't fully white but a duller color. It looked, and smelled, worn. The instructions, in the box beneath the underwear, read:

 

"This box contains the jockstrap proudly worn by a senior brother of this fraternity. Now it is passed to you to symbolize your bond to the men of Alpha Alpha. Take it, and wear it proudly as your brother before. Wear nothing else. Wait patiently."

 

Matt sniffed the jockstrap from a distance - it was truly rank, probably worn over 100 times to the gym by some dude twice Matt's size. He shrugged and removed his own clothes, and put on the jockstrap. It was actually pretty comfortable, once he stopped thinking about how much time it had spent pressed up against another dude's ass and junk. Matt liked how the tight straps felt beneath his ass cheeks, and how the pouch in front held his cock and balls together into a nice tight bulge. 

 

Matt sat on the floor of the room and waited for about 10 minutes (but felt like forever) until the door swung open. Another black hooded figure came in, wearing nothing but the hood and a cleaner, brand new white jockstrap. The man closed the door behind him and instructed Matt to stand. He removed his hood - the man was Sam. His red hair was messed up from the hood but his pale muscular frame stood intimidatingly in front of Matt, thin lines of red hair coating his chest and swarming around his bellybutton and strap. His muscles glistened. It looked like some oil had been spread across them. He sported a semi-erect cock beginning to pitch a tent in his jockstrap. 

 

"In this fraternity, we brothers share a special bond. One that can only be formed with trust and intimacy. We will now test your capacity to form that bond." It sounded like around 9 people were reciting the speech, all at once, one brother per stall. Sam pressed hard on Matt's shoulders, shoving him to the floor and stuffing his package right into Matt's face, who resisted at first, but eventually welcomed his new frat brother's bulge with a hearty sniff...

 

***

 

Back at the lab, the pheromones were having their effect on Brian, tripling his initial attraction to Blake. He ripped off his lab coat, revealing his flat scrawny chest. Blake replied by throwing the blank off the bed and ripping his underwear off, revealing the now towering, and growing 9-inch cock that had been stiffening below for the past 10 minutes. Brian also removed his pants, showed off his own 7-incher, which he rubbed against Blake's cock with glee. Blake felt the familiar feeling of testosterone production ramping up. His muscles were tight, his cock felt harder than it ever had before as it tensely forced itself to become longer and thicker. His lust came like a wave, a primal feeling of sex and desire for cock rushing through his brain, washing away his other meaningless thoughts. Instead of fighting the lust, he embraced it, letting the testosterone his massive pulsing balls were churning out take over without resistance. Because of this, he seemed to maintain a little control of his body, feeling less like a man watching his body without control and more like powerful sex god his body was making him into. 

 

"Huh, you're a twinky little guy," Blake said salaciously. "Nothing a little time with me can't fix." Blake knew what he was doing; he was in control. He lifted his left arm and flexed, then grabbed Brian's head with his right arm and rubbed it right up against the hairy armpit, which was pumping out the all important sex pheromones that made Blake's partners unable to resist his will. Brian licked and sniffed the pit, ingesting three, four, five, ten times as many pheromones as the men before him ever had. Brian roared, his muscles thickening as well, as pecs began to burst and bulge out of his flat chest, abs sculpting themselves into existence, and biceps and legs thickening and growing tighter and denser. His cock roared out in pain, too, dripping precum and doubling in girth as it lengthened to 8.5". 

 

Blake shoved his face onto Brian's new and improved man meat, gagging down its entire length with pure happiness. He grasped his own huge cock, stroking it to satisfy himself while he pleasured his newest lover. Brian himself was in shock, his body feeling so many sensations at once as it both grew in size and thickness, his lust taking over operations of his body while his cock was greedily sucked by the most beautiful man he had ever seen.

 

Eventually Blake was happy with his sucking and he needed more, so he commanded Brian to fuck him. Brian, normally sheepish and timid when it came to sex, immediately plunged his huge cock into Blake's hungry ass as the two fucked missionary style with animalistic rage and revelry. Blake howled and grunted, initially sated by the huge 8.5-inch fuckstick occupying his ass, but it still wasn't enough. He grabbed Brian and threw him onto his back, then stood up and sat back down right on his cock, impaling his sweet bubble ass, his muscles becoming beefier the entire time. Blake's pecs in particular were becoming huge, bulging out and nipples enlargening to unprecedented size as he slowly bounced up and down on Brian's cock.

 

"Fuck!" Blake screamed. "It's still not enough!"

 

He aggressively grabbed Brian's head, forcing him to sit up, and pushed the man's face into his sweaty armpit once more. Brian again inhaled a concentrated dose of pheromones and Blake immediately felt his partner's cock thicken inside his ass. He held Brian's face in his armpit for a few minutes, still bouncing up and down on the huge growing cock, which had swollen to match his own new size of 10.5 inches.

 

Finally, the smell of sex and primal rage couldn't be contained any longer. Blake unleashed a huge torrent of cum, most of the thick spurts landing into the technician's throat, who hungry swallowed Blake's seed. The rest landed on Brian's new infantile muscles, which weren't nearly as large Blake's new beefy pecs, or even close to as large as Matt's new body. But they were muscles nonetheless, which is more than Brian could say about his body before. He came, offering Blake his load in the form of a massive facial, which the other man graciously accepted, sucking down every last drop of cum.

 

"Fuck," Blake said. "That was intense."

 

Brian smiled. "Fuck yeah..." he said, almost collapsing into the larger man's chest as the two drifted to sleep. Alarms were ringing throughout the lab as other technicians scrambled to clean up the messed caused by their horny colleague. All Brian could do was smile as he drifted to sleep, glancing at the hidden biosensor in this lab coat, which had secretly recorded data from the entire fuckfest unbeknownst to his superiors...

 

***

 

Matt was greedily sucking on Sam's thick six-inch cock while he fondled himself, his hand down the pouch of his jockstrap. "Brothers!" a voice boomed from another stall. "Join us!" Sam removed his dick from Matt's mouth and pushed open a back panel to the stall, which led out into a larger, open area. Matt crawled out into the new space, still wearing his jockstrap, and saw the doors to other stalls open with other guys in his position crawling out into the large open area, their masters standing above them.

 

The head brother who called out the order stood behind his own slave-boy, grinning. "Let the true bonding begin," he commanded. 

 

Continued here; https://muscle-growth.org/topic/6813-the-testosterone-effect-part-v/

 

Author's note: Hey guys, sorry for the delay in making this part. I'll be sure to write the next one as soon as I can put my ideas down into writing with out getting off on that fantasy first! Next time, we'll see what happens to Matt at the frat house, and learn about Brian's independent research into the testosterone effect. 

 

There'll be more story development for Blake in the next part, while Matt's segment will be pretty much alll sexy-times; I want to try and keep a balance of normal character development to advance the plot and hot man on man action from here on out. Thanks again for reading!

[asianman2410]

I love your story! Keep up the awesome work Brstealth. As much as I enjoy the sex and growth, I'm quite intruiged as to what Brian is doing with an independent research. Maybe he'll be able to extract and replicate the effect? That would be a cool twist. 

[asianman2410]

Just bumping this story. I realize at the end that it may take a bit until the next chapter, but I hope it's coming soon brstealth! Keep us posted!

[lsosuke]

continue please *-*