The hunger

by JustSam   

A young scientist decides to try a muscle-growth serum on himself, but it does not have the intended effect.

A young scientist named Milo was working on a special compound that would improve your body in every way. He had already lost count of how many times he had failed, but now he was finally close.

“This time it has to work,” he said to himself as he worked.

After a few more minutes of mixing and processing different components, he was finally done. A white compound filled his beaker, the one formula that would transform your body into a bodybuilder even without making any effort to do so.

Milo turned on the camera in the garage of his house where his lab was and pointed it at himself.

“Test number #37. If all goes well, this formula will transform not only my body, but the industry as a whole.”

Without even thinking about the consequences or conducting preliminary tests, the scientist drank the entire liquid. A few minutes later, a heat began to emerge in his body causing him to take off his lab coat as he was melting.

Unfortunately (or fortunately), the heat ceased, having no other effect.

“What a surprise, yet another failure. I will review the formula tomorrow and understand what went wrong.”

At the moment, Milo was tired and decided to take a break to eat. He went into the kitchen and made himself a sandwich. But before he finished, he felt a strange sensation. He felt horny. His cock hardened within the confines of his pants, making a bulge. Milo had never been as horny as he was right now.

“You seem to be in high spirits today,” he said, looking down at his tented pants.

He went upstairs to his room before he even ate. On the way, he was taking off his clothes and noticing the heat was gradually increasing.

In the bedroom, when he took off his pants, he was met with a thud to the abdomen caused by his 25 cm monster. Despite being a bottom, he’d always liked to brag about what he had hidden in his pants.

Milo went to the closet and got some toys and lube. Just the fact that he wanted something in his hole made him twitch like he was hungry.

Milo liked to play with the sensitive areas of his body, taking his time. But something was wrong. When he ran his fingers over her ass, her hole contracted harder as if sensing the presence of something that might get in there.

As he slid his finger through his hole, it sucked with a strange force, almost as if its life depended on it.

“You’re hungry today,” he said with his eyes closed, savoring the feel of his finger being pulled deeper.

A second finger was added and it was also sucked. A third and fourth followed shortly thereafter.

“Hhhhmmmm, yeah…”

Milo found it strange that his hole offered no resistance to fingers. But he was feeling a pleasure he never felt, making his worries disappear.

A real feeling of hunger took hold of his asshole, demanding something more inside him. Something to fill him up completely. “What the fuck is happening to me mhhhhhmmmm,” he said, breathing heavily between moans.

Milo didn’t know it, but his ass was growing too, getting rounder and fatter, almost the size of a basketball.

With his free hand, Milo picked up the first dildo. Didn’t even bother to lubricate it, just taking his fingers out and sticking it in her ass. Again, without any resistance, his hole sucked the toy in with such force that it nearly slipped out of Milo’s grasp.

For a few seconds, that 18 cm piece relieved its heat, bringing back a bit of consciousness lost in the orgasmic euphoria.

He thrust in and out with speed given the need to fill his hole. But something was missing.

Milo was close to coming, but something wouldn’t let him get past the edge. He needed more. He looked to the side, and on top of the bed was an equine-shaped dildo at least a foot long and as thick as his wrist. Instantly, his hole spat out the cock inside him and it pulsed hard, demanding that monster inside him instead.

Milo grabbed that butt-wrecker and shoved it in without even questioning if it would fit inside him. But to his surprise, it went in little by little.

“More!! Give me more!!!” he screamed with an animalistic need.

When his ass hit the base of the dildo, he had the most intense orgasm of his life. Ropes of cum flew over him, hitting his chest, face, and some flying over the headboard. He blacked out, a slight smile on his face after that orgasmic outburst. But one thing was certain: in the morning he needed to find out what was going on.

Vote on this story

Meta massage therapy by M.M.69 A mysterious new massage parlor opened in town, and brothers Jared and Jason have VIP passes. What makes this place so special? 3 parts 15k words Added Nov 2021 Updated 1 Jan 2022 19k views 5.0 stars (15 votes) No comments yet •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cock•Multicock•Multihead•Boytaur•Four Legs•Multiarm•Multileg•Multilimb•Multipec•Multitorso•Replication•Straight to Gay•Hyper Muscle•Hyper Strength•Muscle Growth•Butt Growth•Getting Handsomer•Getting Taller•Plausible Size Difference•Size Increase•Retcon•Suggestion•Age Difference•Incest•Brothers•Father/Son•Selfcest•Dom/Sub•Pagan gods •M/M

Under the knife by screamingmoist An older man desperate for a better body gets more than he bargained for. 5,139 words Added Jul 2023 6,646 views 5.0 stars (2 votes) No comments yet •Getting Dumber•Straight to Gay•Muscle Growth•Butt Growth•Nonconsensual change •M/M

Incubus encounter by Demonized The sauna in the rental house you have for the weekend isn’t as private as you thought... 3,607 words Added Aug 2023 7,311 views 5.0 stars (17 votes) No comments yet •Cock Growth•Ball Growth•Muscle Growth•Butt Growth•Transformation•Getting Taller•Demons•Incubus/Succubus•Supernatural•Complete •M/M

Axel breaks his record by MegaMaker Axel likes to get his growth fix with hot guys he can find, but this time his catch gives him his best fix ever and Axel decides to keep him. 7,620 words Added Apr 2024 19k views 5.0 stars (11 votes) No comments yet •Always Hard•Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Always Cumming•Hyper Cum•Public Orgasm•Hyper Muscle•Pec Fucking•Hyper Strength•Immobility•Muscle Growth•Muscle/Strength•Muscle Worship•Always Shirtless•Public Nudity•Voluptuous Men•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Giants•Forced Growth•Plausible Size Difference•Size Increase•Lycra/Spandex•Shapeshifting •M/M

Speedo beach by Demonized There sure are a lot of people in tiny swimsuits at the beach today... 3,091 words Added Sep 2024 5,422 views 5.0 stars (10 votes) No comments yet •Cock Growth•Ball Growth•Muscle Growth•Butt Growth•Increased Libido•Getting Handsomer•Transformation•Getting Taller•Hairless•Gross Bodily Fluids•Lycra/Spandex•Complete •M/M

Spice up your life by Musclesaber Roommates Sam and Collin try to return to a life of normalcy after the pandemic. Trying to have a get together with friends, Sam buys a new spice pack at the store that has some surprises in store for the pair. 8 parts 22k words Added Feb 2021 Updated 7 Aug 2021 30k views 5.0 stars (23 votes) No comments yet •Cock Growth•Huge Cock•Muscle Growth•Butt Growth•Belly Growth•Getting Taller•Fourth of July•Set during the Pandemic •M/M

The alpha touch by Caliburn Young engineer Max has a good deed rewarded with a mysterious rune now tattooed to his wrist. Bestowed with the power to change the body of the men he touches, Max’s life and his friends’ change quite a bit. 18 parts 88k words (#37) Added Jan 2022 Updated 18 Jan 2025 119k views 4.9 stars (254 votes) No comments yet •Cock Growth•Huge Balls•Huge Cock•Straight to Gay•Muscle Growth•Butt Growth•Increased Libido•Gradual Change•Voice Deepening•Getting Taller•Size Increase•Hair Growth/Getting Hairy•Suggestion•Hetero Sex•Dom/Sub•Nonconsensual change •M/M•M/F

Kris and Minato by BRK Two best friends on a class trip get some help declaring their feelings for each other. 7 parts 30k words Added Nov 2024 Updated 26 Apr 2025 16k views 4.9 stars (19 votes) No comments yet •Always Hard•Cock Growth•Cockfucking•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Nipple Emissions•Multicock•Multiarm•Hyper Muscle•Muscle Breast•Muscle Growth•Muscle/Strength•Always Shirtless•Stretchy•Butt Growth•Hyper Anus•Increased Libido•Getting Handsomer•Voice Deepening•Getting Taller•Plausible Size Difference•Size Increase•Hyper Tongue•Tongue Growth•First Time/Virgin•Incest•Brothers•Twins•Complete •M/M