Gay Muscle Growth Stories

68,898 results
Orientation
Length
Source
Infinite Scroll

Dick World

by darkness_drearing on Dec 25, 2019
Bisexual

For contributors As was stated at the top: while there were will be two general threads to go off of (for a guy and girl), feel free to create your own characters or scenarios. The only shared premise among them needs to be that they find themselves, however you decide that happens, in this universe and, as The Eagles would say, "You can check out any t...

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Gertrude's girth

by Grepster on Apr 22, 2025

"Oh yeah, look at that big cock, I'm such a virile sex beast." Gertrude remarked flexing her muscles in the mirror "Look at all that muscle... keep-keep your girl on a... this is stupid." Gertrude laughed off her own psych up in the mirror looking at her naked definition lacking 90lb body with it's modest four inch penis and orange slices...

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Stud Farm

by AndrewJackson on Sep 25, 2017
Sci-Fi & Fantasy

The following is a work of erotic science fiction. None of the characters are real. MF, MM, fantasy, slow, rom, size, gr, toy, md, fd * Ok, I'll confess. I always wanted a huge cock. I'm about normal (6 inches), but nothing extraordinary. What did I want? 12. I've always fantasized about being too big to fit in a cunt easily, and bottom out before she reac...

IrreFutable Changes

by D0Wh4tever on Aug 17, 2020
Fetish

In the medical world, it got called the Hormone-Oriented Sexual Transmutative Disease. The disease was transmittable through sexual activity and, as its symptoms and causes became more well-known, it got classified as an STD (Sexually Transmitted Disease) very quickly. Many people were fearful of the disease. They were never sure if they'd catch it, nor how...

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A Love High in Protein

by mistyfdfa on Sep 16, 2017
Sci-Fi & Fantasy

Warning: this massive, sexually explicit story, featuring a couple consisting of a huge, burly guy and a petite, willowy size queen, is about her achieving her dream of somehow growing larger to the point that she out grows him in every way imaginable. If things like a size difference fetish, muscles growing on both men and women, a woman becoming altersex,...

A Stretchy Situation (Side A)

by mistyfdfa on Oct 14, 2017
Sci-Fi & Fantasy

Warning: this sexually explicit story about three superhero spies having a relationship dispute is very skewed towards femdom as he finds himself in trouble with both of them. It features elastic ladies as well as breast, butt, clit, hip, penis, and vulva expansion, women's muscle growth, and some very intense facesitting. If any of that sounds like somethin...

Mystique: A-Force Predators

by gorel29 on Apr 9, 2020
Fan Fiction

Stepping through the front door of the shared lair of the Brotherhood of mutants, Mystique stepped through the door first, sulking with the rest of her teammates following her inside. She was depressed, incredibly so. Her head hung low that her red flowing hair obscured her face and shoulders as she sluggishly made her way inside. Her white silk dress draggi...

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A New World Pt. 01 - Preface

by Newworldfuta on Nov 4, 2019
Fetish

Preface: ( I have a few stories in mind that i will be writing. This preface is an explanation of the universe/ world/ timeline that they occur. While its not entirely necessary to the reader to read this before or after reading any of my stories, it is helpful to me to establish and maintain continuity etc. ) The year is 2040, the world is a different pla...

Male Homo Erectis Virus

by Bh12 on Apr 22, 2025

The Homo Erectis Virus started off in a research laboratory, originally meant to increase a males’ musculature, stamina, and longevity. The virus cells came from HIV, as it is a retrovirus that has RNA as its genomic material, and converts it into DNA strands which can be inserted into the DNA strand. The DNA also contains the instructions to make more retro...

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A Birthday on Camera

by mistyfdfa on Sep 16, 2017
Sci-Fi & Fantasy

This story contains two tans ladies in a d/s relationship getting off to each other's growth and frankly getting a little carried away. If hugely dicked or muscled women are not your thing, I would choose another destination. ***** When Zoey got a message from Kelly at lunch, saying that she wanted to Skype tonight, she figured her girlfriend was just goin...