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 14k views 5.0 stars (15 votes) •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

Went wrong? by Bigmusclenm Jared can eat huge quantities of food without spoiling his hunky physique. His roommate, Martin, can’t help wondering if that applies to the extra-strength gainer powder he’s gotten his hands on. 5 parts 12k words Added Dec 2023 Updated 2 Mar 2024 19k views 5.0 stars (46 votes) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Cum inflation•Hyper Cum•Hyper Muscle•Immobility•Muscle Breast•Muscle Growth•Butt Growth•Belly Growth•Feeding•Getting Taller•Plausible Size Difference•Size Increase•Inflation •M/M

The Vale by CockTFBoi When Kurt inherits a remote mansion from his uncle, he decides to spend the summer there with his friends. Andy and Oliver join him at the start of the summer to explore the house, but the place is surrounded by a huge valley located deep in the wilderness far from civilization. As strange events begin to unfold, the trio must figure out what is happening to them. 5 parts 34k words Added May 2023 Updated 30 Sep 2023 11k views 4.9 stars (16 votes) •Always Hard•Cock Growth•Cut to Uncut•Cock Shrinking•Cock Theft•Cockless•Huge Balls•Ball Growth•Human to Cock•Cum inflation•Cum Milking•Always Cumming•Hyper Cum•Boytaur•Four Legs•Butch-to-Fem•Muscle Growth•Always Shirtless•Public Nudity•Pointy Ears•Voluptuous Men•Butt Growth•Increased Libido•Gradual Change•Transformation•Size Decrease•Human to Inanimate•Hairless•Getting Fatter•Cock Cage•Dom/Sub•Nonconsensual sex•Restraints•Dildos/Toys•Anthro/Furry•Orcs•Werewolves •M•M/M•M/M/M•M/M/M/...

The book of desires by SomeMuscleGuy After stealing a corrupted book at the gym, Michael is left growing uncontrollably by a Symbiotic Demon that only wants to swell its victims with the most size possible. But even the demon underestimates just how gigantic Michael wants to become. 7,676 words Added Dec 2022 21k views 4.9 stars (10 votes) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Public Orgasm•Multi-abs•Addiction•Hyper Muscle•Hyper Strength•Immobility•Muscle Growth•Muscle Worship•Public Nudity•Butt Growth•Foot Growth•Transformation•Voice Deepening•Getting Taller•Giants•Size Increase•Destruction/Violence•Nonconsensual change•Infectious•Aliens•Symbiotes•Complete•Stories with Images •M

Stories to tell in the dark by Thorn Sean discovers a book that is filled with some surprising stories. 2 parts 9,685 words Added Apr 2021 Updated 17 Apr 2021 18k views 4.9 stars (35 votes) •Cock Growth•Huge Balls•Huge Cock•Muscle Growth•Muscle Gut•Butt Growth•Belly Growth•Voice Deepening•Getting Taller•Size Increase•Getting Fatter•Inflation

Under control by MaxMorphs Rylan is enthralled as his roommate, Peter, seems to be growing all over—though Peter denies anything is happening, and no one else seems to notice either. 5 parts 22k words Added Apr 2020 Updated 8 Aug 2020 41k views 4.9 stars (34 votes) •Cock Growth•Huge Balls•Huge Cock•Nipple Emissions•Muscle Growth•Muscle/Strength•Butt Growth•Gradual Change•Getting Taller•Size Increase •M/M

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 (#77) Added Mar 2023 Updated 20 May 2023 63k views 4.9 stars (62 votes) •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

Growth drive by Musclesaber Jared is on his way to work when he stops by a shop that gives him everything he could’ve dreamed for how to grow bigger. Is it too good to be true? We will have to wait and see how giving people are towards a growing giant. 5 parts 12k words Added Mar 2024 Updated 30 Mar 2024 14k views 4.8 stars (50 votes) •Cock Growth•Huge Balls•Ball Growth•Huge Cock•Hyper Cock•Hyper Cum•Hyper Muscle•Pec Fucking•Hyper Strength•Immobility•Muscle Breast•Muscle Growth•Muscle/Strength•Muscle Worship•Butt Growth•Foot Growth•Transformation•Getting Taller•Giants•Plausible Size Difference•Size Increase•Social Media•Dom/Sub•Stories with Images•Medieval(ish) •M