Muscle Expansion Stories

46,228 results
Orientation
Length
Source
Infinite Scroll

Hand Me Down Ed

by Assassin161 on Jul 29, 2017
Fan Fiction

All characters from here on are 18 or older and are consenting adults. High above the sky, a mystical boomerang flies over Peach Creek and circles the famous cul de sac. As it chooses its first victim carefully, it dives toward...What's next? Jimmy What's next? Jimmy...

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Twin Perfection

by ThomasElliot on Dec 24, 2019
Fetish

*Authors note* If you don't like ridiculously huge dicks and tits and asses and muscles, this story is not for you. If you do like that stuff, please enjoy. * * * So, my story. My story is actually a fun one I think. A bit ridiculous, but mostly fun. My name is Katrina, and this is how I found my sexual paradise. My young life was nothing interesting. I...

Well of Three Wishes

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

This story contains some absurd levels of growth. If mini-giantesses with huge boobs are not a thing you enjoy, this story is not for you. It also has a reality bending component, if you like simple, straightforward transformations, this is a far cry. ***** It had been billed as a mystical place as part of the Magical Ireland Tour, but as Myra and Leela lo...

She Got Hooked on Gaining

by Sir Kata on Nov 15, 2020
Fetish

Update! This story is now interactive (though moderated). If you'd like to add your own take to this story at any point, you should now be able to "Add a new chapter" I hope you'll take this opportunity to add on to this story, and I look forward to anything you'll add! The closet door opened with a small creak, and Kate frowned at the sound as s...

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Futa Breeder

by silent soul ken on May 8, 2019
Fantasy

You could hear it a voice speaking, "Finally after 18 years you are ready..." It said, you understood. You had a mind and it instantly asked a single question. 'Who is that?' then another came 'Who am I?' it was so simple... yet so vexing. The voice spoke again, "Brainwaves are normal... activity picking up." it said. 'Who am I? Where am...

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Evergarden

by niblelungvalesti on Mar 18, 2017
Science Fiction

You stretch your slightly tired arms as you walk in the cover of the night. Ever since you started working at a small advertising agency you've been coming home late. The pay is good but you rarely get enough sleep. You sigh and rub your sides as you hurriedly stride to your apartment. Your "apartment" seemed more like a storage space because of th...

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That's not what I heard

by Se7en_Sins on Sep 16, 2020
Fetish

That morning was like any other. A bunch of drunken assholes staying over at my house. Not that I invited any of them to come over and drink. That would be my obnoxious older brother. I'm Mark and I'm an 18 year old high school senior. My brother Jake is also 18, but he came about 3 minutes before I did. Anywho when your parents are gone all the time you pre...

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Rutting 'Stallion'

by ViceTight on Jul 19, 2014
Science Fiction

'Genefusion' is an unnaturally weird process. The memory of the feeling of the bulky respirator on your lips, pumping you up enough to keep you the correct side of alive meets your dreams again. It has been the cause of many an unpleasant reawakening should your pillow fall into your face at night. You sit up, cold sweat dripping over your now tainted boy, c...

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Lust at First Sight

by jaguarspot on Sep 14, 2017
Erotic Couplings

We saw each other at the same time when I deplaned. I didn't get to sneak a peek first, but neither did you. You're even sexier than I imagined. Your glance has lived through a thousand lifetimes, easy. You've lived secrets I've dreamed. Maybe you think those sly dimples of yours conceal the bad boy in you, but I've been around too, and I know better. Still...

The ring

by doctorbreast on Sep 16, 2018
Miscellaneous

Your name is David. You live on your own, in a small flat in the centre of the city. You are 23 years old, 5 foot 10 inches tall, and you wear geeky looking glasses. This morning you were walking back from the bank when you spotted an old woman who had just dropped all her shopping. Deciding you had time, you went over and helped load her shopping back into...

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