The serum

by Unknown

Once you develop a serum for extreme muscle growth you have to test it, right? Except the only volunteer subject may be a little too eager...

1,508 words Added Jul 2014 22k views 3.8 stars (15 votes)

Vote on this story Report a problem with this story Unit conversion Share / Reload Jump to comments Suggest tags for this story Print / PDF Update history More like this Symbols

 

I had been working as a bio/genetical engineer for a couple of years now. My mission was to find a way to alter the genes of a person so as to be able to keep them from getting the deadly AIDS virus, but my personal mission was to find a way to create a formula that would allow for enormous muscle growth. This is my story of how I found that and the repercussions of the finding…..

I had worked for close to three years on finding this formula, and I think that I have finally finished it, but I still had no idea whether or not it worked, because as we all know things always look a lot better on paper than they do in real life. I needed a subject to test it on and it certainly could not be me, because what if something went wrong. So I put the word out, and amazingly enough it took over a week to get any response. The only response I got did not look as though it was going to work out, but boy was I wrong. The person that responded to the call said his name was Mike. I was very expecting until I saw Mike walk in the door to my personal lab on the outskirts of town. Mike was a young man about 5’6” and he could not have weighed more than 120 pounds. All hope was lost….or was it.

I figured I had nothing to lose by going through with the interview to see if he was a worthy candidate for the experiment. I began by asking why he would want to go through with the experiment. He responded with a story of how he had been a fat geek until 3 months ago, and after looking him over I had no idea how the person sitting in front of me could ever have been fat or geeky. The interview went on and I explained that I didn’t know how the formula would react in a human or what the results would be. he assured me however that if it allowed for him to get bigger than he would do anything for it no matter how dangerous. I asked how big he would like to get and he assured me there was no limit to his thirst for growth. I realized that I had found my man or boy. I went a little further to question him on all of the typical stuff like age and other background info. I found out that Mike was only 18.

The next step in the process was to get a feel for what kind of growth Mike was looking for. For this I put a truth serum in him and had him explain to my computer what he was looking for. After a half hour I took a look at the finished screen and was amazed, I had to zoom out to 10 % to view the entire body because Mike had drawn a man so large. This was going to be great. Finally I asked Mike to get in the chamber so that my computer could scan him for all of the vital info. He climbed in and then I got the honor to ask him to strip. He was rather at ease when I asked him to do this. Before he stripped I took a picture and as he stripped I studied the picture. Although he was even thinner than myself which is a feat he was incredibly good looking. He had long blond hair that fell to about his nipples. At the time he was wearing a loose green and blue sweater with a tight white turtle neck beneath it. he was also wearing white Dockers corduroys and Doc Martens. He really wasn’t that bad. A little more meat on him and I would have taken him.

The computer began to shoot out the stats. He was 5’7” and 125 pounds. He had 12 inch arms, 35 inch chest, 29 inch waist, and a 9 inch cock. Well I could see there was a lot of work to be done, but I hoped that it really would be that hard. Mike came out of the chamber and walked over towards me. He was still naked, but I told him he could put his clothes back on. He frowned and began with the cords. Soon after putting his sweater back he asked what was coming next, I told him that we would a couple of minutes while the computer analyzed the info. In the meantime I told him to sit down for the first dose.

The first dose was an injection. Before I put it in him Mike asked what this would do. I told him that this would cause his body to grow in height in order to allow for more muscle development later. Mike jumped up and asked how tall he would grow. I told him somewhere around 6’6”. He ran out saying he needed to buy clothes, and I tried to catch him but it was too late. Didn’t he realize his muscle growth would be far larger than any normal clothes would fit.

Well, an hour later when Mike returned with all of his clothes which again were very stylish, I shot him up with the formula. He asked how long it would take, and I guessed it would take about an hour. About two hours later Michael called out to me from the chamber that it wasn’t working and he wanted to know what we were going to do now. I told him he could come out of the chamber and that was it I guess I had failed.

Mike came over to me very sad and disappointed. We began to talk about what we had hoped would happen. I told Mike I wanted to see him grow and develop. I described exactly what I wanted him to look like. I saw at least one part of Mike begin to grow as his dick swelled in his cords.

“Suck me, please give me something out of this day.” Mike asked.

“Who am I to deprive you of that?” I said as I moved my hand up his sexy sweater feeling his nipples. I took off his sweater and stood up to suck his nipples, but I couldn’t reach them. But wait I was 5’4”. Why couldn’t I reach the nipples of someone who was 5’6”?

“Oh my God, Mike get in the chamber.” I screamed Mike ran into the chamber. I scanned him, and it was official he was almost 6’ tall, and now it showed. His sweater which he had put back on was showing his stomach, and his once long pants now fit perfectly.

I began to think of what had caused the growth but I could not figure it out until I noticed my hard-on. I had figured it out. The sexual arousal had caused the formula to work.

“Mike start to think of how big you will grow.” I called out. “How your chest will tear through the sweater and your arms will be as big as bowling balls, and how your cock will tear off those sexy cords.”

I watched as he began to grow from two directions. His cock swelled, and his body grew along with it. I told Mike to take out his cock and to jack off, and he did. By the time he came the growth had been over for about ten minutes, but he was enjoying his new growth too much.

He came out of the chamber, and I stared at him. He sweater now hung around the bottom of his nipples and his pants hung around his knees, also hanging around his knees was his now soft cock. Mike had grown to 6’10” 165 lbs. and his cock was now 13 inches soft and 22 inches hard.

“We did it Doc, it worked!” shouted the superhung, stretched out cutie. “Hurry up and give me the other stuff I just can’t wait to see what that will do.”

“Don’t you want to know how big you are now?” I asked, a little awe in my voice.

“All I know is that I can get bigger and nothing will stop me from doing that, so give me the formula, please!”

I couldn’t resist, maybe it was he was so sexy, maybe it was his cock that was beginning to swell again, or maybe he frightened me. I don’t know, but I asked Mike after he drank the vial if I could suck him. He nodded impatiently.

I gave him the vial of the formula and he downed it. Neither of us was ready for what was going to come next…

1,508 words Added Jul 2014 22k views 3.8 stars (15 votes)

Vote on this story Report a problem with this story Unit conversion Share / Reload Jump to comments Suggest tags for this story Print / PDF Update history More like this Symbols

Metabods is an alternative gay erotica site involving fantasy situations. All relevant characters are intended to be 18 years or older. If you encounter a story in which it appears that is not the case, please use the “Report a problem with this story” link directly under the tag list to call it to our attention, and that story will be placed under immediate review. Thank you.

 

Comments

 

More Like This

The phallus god of destiny by UberPump Benjamin has been possessed by a Japanese demon called an Oni, one who possesses the power to create the desires of those whom it possesses.   He has the desire to get what he wants—a bigger cock, a bigger body, and much bigger pecs.  Once he's fulfilled the divine duty of cock fucking the statue, he's imbued with great power to turn anyone into hyper muscled, big, dicked followers... only he must fulfil his duties as a newly-grown deity or face the consequences that, if unused, power must be stored somewhere. 5,280 words Added Jul 2023 24k views 4.8 stars (11 votes) No comments yet •Cock Growth•Cockfucking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Cum Milking•Always Cumming•Hyper Cum•Nipple Emissions•Hyper Muscle•Muscle Breast•Muscle Growth•Muscle/Strength•Muscle Worship•Public Nudity•Voluptuous Men•Increased Libido•Getting Handsomer•Voice Deepening•Forced Growth•Size Increase•Inflation•Bisexual•Absorption•Hyper Pheromones•Djin/Jinn/Genie•Supernatural•Possession •M•M/M

Teacher’s testimony by Six Pecs A teacher testifies to having been part of the inner circle surrounding a young man with godlike powers. 12 parts 49k words (#88) Added Aug 2024 Updated 9 Aug 2025 47k views 5.0 stars (46 votes) No comments yet •Cock Growth•Cock Shrinking•Huge Balls•Ball Growth•Huge Cock•Cock Body•Hyper Cock•Nipcocks•Hyper Cum•Nipple Emissions•Public Orgasm•Extra digits•Multi-abs•Multicock•Multiarm•Multilimb•Multitorso•Replication•Other Mental Changes•Straight to Gay•Hyper Strength•Muscle Breast•Muscle Growth•Muscle Theft•Muscle/Strength•Public Nudity•Body Parts in Strange Places•Man Scent•Voluptuous Men•Butt Growth•Hyper Anus•Feeding•Foot Growth•Getting Handsomer•Gradual Change•Transformation•Voice Deepening•Getting Taller•Giants•Forced Growth•Plausible Size Difference•Size Decrease•Size Increase•Age Progression•Age Regression•Human to Inanimate•Hair Growth/Getting Hairy•Hyper Tongue•Tongue Growth•Mouthcock•Age Difference•Incest•Father/Son•Selfcest•Nonconsensual change•Restraints•Rubber/Latex•Absorption•Hyper Pheromones•Infectious•Merging•Shared Body•Goo People•Possession•Gay Pride•Hypnosis•Mind Control•Shapeshifting•High School (18+)•College/University •M/M•M/M/M•M/M/M/...

Bloody pumpkin fuckers by NioSatyr Three frat bros go into the dark forest on Halloween. The blood moon shining on a wild pumpkin patch promises growth and transformation. 7,196 words Added Oct 2021 38k views 4.8 stars (19 votes) No comments yet •Always Hard•Cock Growth•Cockfucking•Huge Balls•Huge Cock•Nipcocks•Prehensile Cock•Hyper Cum•Nipple Emissions•Multi-balls•Multicock•Multiarm•Multipec•Stacking•Wings•Getting Dumber•Straight to Gay•Hyper Muscle•Muscle Breast•Muscle Growth•Stretchy•Increased Libido•Transformation•Getting Taller•Giants•Plausible Size Difference•Size Increase•Human to Animal/Anthro•Hair Growth/Getting Hairy•Hyper Tongue•Tongue Growth•Mouthcock•Tailcock•Plants•Anthro/Furry•Dragons•Werewolves•Supernatural•Halloween•College/University •M/M/M

Growth at the house on the hill by Musclesaber Erik loses a bet with his friends and has to spend the night in the old haunted house on the outskirts of town. However, he's in for a big surprise when he finds he's not the only inhabitant of this massive mansion. 7,728 words Added Nov 2024 18k views 4.8 stars (12 votes) No comments yet •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Public Orgasm•Hyper Muscle•Pec Fucking•Hyper Strength•Muscle Breast•Muscle Growth•Muscle Gut•Muscle/Strength•Butt Growth•Belly Growth•Transformation•Getting Taller•Giants•Forced Growth•Plausible Size Difference•Size Increase•Shared Body•Ghosts•Supernatural•Possession•Halloween•Complete •M/M

The hidden truth by SomeMuscleGuy After confessing your feelings to your two friends, Isaac and Mark, they decide to share their biggest secret with you—and what better way to show you than to transform and grow before your very eyes? 4 parts 9,247 words Added Jun 2025 Updated 19 Jul 2025 16k views 5.0 stars (12 votes) No comments yet •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Self-suck•Hyper Cum•Public Orgasm•Hyper Muscle•Pec Fucking•Muscle Growth•Muscle Gut•Muscle/Strength•Muscle Worship•Public Nudity•Pointy Ears•Butt Growth•Increased Libido•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Human to Animal/Anthro•Dom/Sub•Infectious•Anthro/Furry•Werewolves•Complete •M/M/M

Egregious Fantasy by BRK Seth lives a normal life in a humdrum world, until he happens to run into a guy who in every way surpasses anything he’s ever dreamt of. 3 parts 18k words Added May 2025 Updated 26 Jul 2025 14k views 5.0 stars (12 votes) No comments yet •Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Multiarm•Pec Fucking•Muscle Growth•Muscle/Strength•Muscle Worship•Getting Taller•Plausible Size Difference•Size Increase •M/M•M/M/M•M/M/M/...

5D Super User: Brandon by pkak2k12 Brandon finds out he has an unexpected gift the second he becomes 18. 11 parts 23k words Added Jan 2023 Updated 18 Mar 2023 39k views 4.9 stars (77 votes) No comments yet •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Muscle Growth•Muscle/Strength•Muscle Worship•Gradual Change•Getting Taller•Size Increase•Retcon•Incest•Bisexual•High School (18+) •t/t

One more drop by MegaMaker A college water polo player, Rain, is having trouble keeping up with expectations after a lackluster swim season. Afraid of getting cut from his team, he finds a mystery serum that improve his performance. To his surprise it works and his improved performance gets the approval of his entire team and his coach and really attracts the attention of his friend River. Will the attention go his head? Will his team and coach find out? And… will there be any side effects caused by the use of the serum? 16 parts 48k words (#91) Added Mar 2023 Updated 20 May 2023 95k views 4.9 stars (69 votes) No comments yet •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Straight to Gay•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Always Shirtless•Public Nudity•Man Scent•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Forced Growth•Plausible Size Difference•Size Increase•Hair Growth/Getting Hairy•Lycra/Spandex•Complete •M/M

scrollTop: 0
 

Commenting and star-upvoting helps others find the good stuff  (Credit: Paul Atkinson)

 

For more on BRK commissions click here or go to commissions.metabods.com  (Credit: Aaron Amat)