M/t

Stories in which the erotic encounters and/or focus involves a man and a teenager (under 18 years old) together (or wanting to be together).

Note on stories involving multiple sets of characters: Categories apply to the narrative at any given point. If a story involves Andy wanting to be with Bob, and Charlie wanting to be with Dave, it’s M/M, not M/M/M. If Andy and Bob hook up with Evan, then at that point it becomes M/M/M.

A 2

Absolute general relativity by brazboy Matias, Murilo, and Marcelo are three brothers in very different stations in life, navigating a world organized by a single universal, albeit apparently contradictory, principle—absolute general relativity. 5,999 words Added Aug 2023 4,406 views 5.0 stars (1 vote) No comments yet •Huge Balls•Huge Cock•Public Nudity•Incest•Brothers •M/M•M/M/M•M/t

Alpha Coach and Mike by Eric Aaldersen Alpha Mike remembers the alpha who made him—his super-hot high school hockey coach! 7,300 words Added Apr 2020 12k views 5.0 stars (8 votes) No comments yet •Huge Balls•Huge Cock•Muscle/Strength•First Time/Virgin•Supernatural •M/t

B 4

Bad suggestion by pkak2k12 I’ve learned what I say about others happens. However, I’m still figuring out how to use it, and my best friend and little brother kind of ended up being test subjects for it. 1,619 words Added Sep 2022 15k views 4.6 stars (26 votes) No comments yet •Cock Growth•Muscle Growth•Muscle/Strength•Getting Taller•Plausible Size Difference•Size Increase•Retcon•Suggestion•Incest•Brothers •M/M•M/t

Brotherly love by TheSizeKing Reece is a 20-year-old guy who has everything going for him in life: good looks, good brains, good personality, even a well-above average endowment between his legs. His younger brother, Michael, is exactly the opposite. Michael is about to turn 18, and could use a little boost before he goes out into the adult world. 5 parts 7,816 words Added Apr 2020 22k views 4.9 stars (22 votes) No comments yet •Cock Growth•Huge Cock•Hyper Cock•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Incest•Brothers •M/t

The brothers by FanTCMan Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. 8 parts 23k words Added Mar 2003 119k views 4.8 stars (96 votes) No comments yet •Always Hard•Cock Growth•Huge Cock•Addiction•Straight to Gay•Muscle Growth•Muscle/Strength•Gradual Change•Hair Growth/Getting Hairy•Incest•Brothers •t/t•M/t

The bunker by JayPat Fleeing some bullies, three teens hide in a secret abandoned bunker hidden in the Arizona wilds where they find some antiquated computer equipment that they really should’ve left alone. 5 parts 28k words Added Nov 2018 21k views 4.3 stars (25 votes) No comments yet •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Size Increase •M/M•t/t•M/t

C 2

Coach Barker by Argenti Coach Travis Barker has a special gift, and when he shares this gift with Adam, change begins to unfold around them. 9 parts 19k words Added May 2019 Updated 15 Jun 2019 46k views 4.9 stars (36 votes) No comments yet •Cock Growth•Huge Cock•Hyper Cock•Hyper Cum•Straight to Gay•Muscle Growth•Muscle/Strength•Getting Taller•Giants•Plausible Size Difference•Size Increase•Infectious •M/t

Coming of age by Also Known As Jerry’s nephew comes to visit him in San Francisco, and turns out to be very huge, very beautiful and very uninhibited. 4 parts 13k words Added Feb 2019 28k views 5.0 stars (21 votes) No comments yet •Cock Growth•Huge Balls•Huge Cock•Self-suck•Hyper Cum•Muscle Growth•Muscle/Strength•Getting Taller•Size Increase•Hairless•Incest •M/t

D 1

Daemos island by Charles Westfall A Polish scientist and explorer, Ferdinand Rolcek, discovers a hidden island where the lost secrets of the Daemos, alien pioneers of masculine beauty and sexuality far beyond anything known to humanity, are finally revealed to him; and what he learns makes him never want to leave again. Don’t worry, he won’t be lonely. 6 parts 15k words Added Feb 2003 32k views 3.2 stars (21 votes) No comments yet •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Increased Libido•Size Increase•Age Difference•Incest•Father/Son•Twins•Destruction/Violence •M/t

F 1

Full potential by muscl4life and Redkage Coach Tanner hears about a young man named Corey who can lift more than is humanly possible. Fascinated, he tracks Corey down—only to discover he’s the last person he would have guessed. 2 parts 11k words Added Mar 2016 22k views 4.7 stars (14 votes) No comments yet •Hyper Muscle•Hyper Strength•Muscle Growth•Muscle/Strength•Size Increase •M/t•NS

G 2

The good freak by Also Known As Kevin Peters is a cheerful, very fit young man who happens to be getting bigger and hotter in every way, much to the bemusement (and secret arousal) of his doctor. Soon the guys around him are growing too, and Dr. Donaldson discovers even he’s not immune... 33 parts 34k words Added Nov 2002 54k views 4.9 stars (25 votes) No comments yet •Always Hard•Cock Growth•Huge Balls•Huge Cock•Hyper Cum•Muscle Growth•Muscle/Strength•Gradual Change•Getting Taller•Size Increase•Infectious•April Fool’s Day •M/M•M/M/M•t/t•t/t/t•M/t

Green, green, evergreen eyes by Knock Noct Not An encounter with a hairy herculean intruder leaves a young man helpless in more ways than one. 1,974 words Added Sep 2024 1,210 views 5.0 stars (6 votes) No comments yet •Huge Cock•Multicock•Voluptuous Men•Age Difference•Nonconsensual change•Nonconsensual sex•Merging•Shared Body•Complete •M/t

L 1

Lucas gets everything he wanted, and more by Joven Lucas steals some of his researcher friend’s enhancement drug, and is elated when David decides to let him keep taking it once he turns 18. 8 parts 11k words Added Jan 2019 Updated 26 Jan 2019 19k views 4.7 stars (15 votes) No comments yet •Cock Growth•Huge Balls•Ball Growth•Huge Cock •M/t

M 3

The maturing ceremony by brazboy Out of all the sacred moments in a lad’s life, none is more amazing and important than his maturing ceremony. Dinis will, led by his own older brother, find in it the chance to become an improved version of his hunkish self. 3,858 words Added Sep 2023 4,139 views 4.4 stars (5 votes) No comments yet •Cock Growth•Huge Cock•Hyper Cock•Public Orgasm•Extra Mouths•Multi-abs•Multicock•Multiarm•Multileg•Multilimb•Multipec•Multitongue•Multitorso•Stacking•Muscle Growth•Transformation•Incest•Brothers•Complete •M/M/M/...•M/t

Musclove, Texas by Max Mann Moving to Musclove, Texas with his sons to take up a new teaching position, Rick Long is startled to find a town full of huge, hung, and horny men, all of them eager to have the newcomers join them (in more ways than one). 9 parts 26k words Added Sep 2004 78k views 4.8 stars (51 votes) No comments yet •Cock Growth•Hyper Cock•Hyper Cum•Muscle Growth•Muscle/Strength•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Twins•Restraints •M/M•M/M/M•t/t•t/t/t•M/t

My roommate (complete) by LenZelig Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang, and the others drawn into his adventures, combined with the stories of Andy’s son and his friends. (This revised and updated compilation version includes both “My Roommate” and “My Roommate: The Next Generation.”) 29 parts 223k words (#3) Added Jul 2002 Updated 19 Jun 2021 177k views 4.5 stars (26 votes) No comments yet •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Age Difference•First Time/Virgin•Incest•Brothers•Father/Son•Bisexual•Hetero Sex•Dom/Sub•Witch/Warlock/Wizard•Gay Pride•Mind Control•Complete •M/M•M/M/M•M/M/M/...•t/t•M/t•M/F•M/M/F

N 1

Not just imagination by DarkDjin Jampson’s overactive imagination starts to grow his cop dad and his friends...and somehow not only does it become real, but the men are pretty into it. 2 parts 11k words Added Jun 2014 Updated 5 Jul 2014 43k views 4.6 stars (39 votes) No comments yet •Cock Growth•Huge Cock•Muscle Growth•Muscle/Strength•Suggestion•Age Difference•Incest•Father/Son •M/t

P 2

Pool party by FanTCMan Two young men are nervous but excited. They’re about to show off their muscle transformation in front of all the guys at the pool! 1,575 words Added Dec 2002 22k views 4.5 stars (12 votes) No comments yet •Muscle Growth•Muscle/Strength•Getting Handsomer•Age Difference•Incest•Father/Son •M/M/M/...•t/t•M/t

The Porter Men by Inclytos The Porters are a family of perfect men, all uniquely perfect in their own way. It’s how it’s always been, right? 3 parts 8,809 words Added Oct 2022 Updated 5 Nov 2022 16k views 4.5 stars (23 votes) No comments yet •Cock Growth•Cock Shrinking•Huge Cock•Dom to Sub•Getting Dumber•Pec Fucking•Hyper Strength•Muscle Breast•Muscle Growth•Muscle/Strength•Always Shirtless•Butt Growth•Increased Libido•Retcon•Incest•Brothers•Father/Son•Twins•Dom/Sub•Sex-Slave •M/M•t/t•M/t

T 1

Toy story by LenZelig During a storm Bob stumbles across a strange webpage offering something called “The Ultimate Sex Machine”. Intrigued, he clicks “order”, expecting maybe a sophisticated sex toy. Instead he gets Randy, a hunk-shaped machine dedicated to ensuring that Bob experiences ultimate sexual possibilities from now on and willing to reshape reality to make it happen. 2 parts 6,947 words Added Jul 2002 33k views 5.0 stars (27 votes) No comments yet •Muscle Growth•Muscle/Strength•Age Difference•Incest•Father/Son•Twins•Androids/Cyborgs•Space Travel•Complete •M/M•M/M/M/...•t/t•M/t