Usually occurs in stories where guys relentlessly pursue (or have imposed on them) phenomenal muscle growth, the trade-off coming in the form of lost of intellect and even reduction to a more animal-like mental state.
Related: Addiction; Butch-to-Fem; Gay to Straight; Other Mental Changes; Straight to Gay.
Child of: Mental Changes.
Top Stories: “Mimbo drops”; “David devolving”; “Anything to grow”; “Summer research”; “Mariposa honeymoon: A six-pack story”.
28 stories found. Total word count: 305,386.
- Administrator by FanTCMan CockUp Cock Dumber MuscUp Musc Added Apr 2003 1,784 words 22,804 views 4.2 stars (9 votes)
- Anything to grow by Big Bull Trainer Dumber Immob MuscUp Musc Tf SizeUp There are some with an unquenchable desire to not only grow, but to grow to unnaturally large proportions, and will go to any lengths to do it. This is a story of just such a person. Added Aug 2016 7,815 words 35,454 views 4.5 stars (13 votes)
- An app for the ages by Seth Peterson CockUp Cock Fem Dumber 2Gay MusBr MuscUp Musc Taller Hairier App Nonc An app that can change people on a whim? A totally ego-maniacal straight boy with a strong distaste toward his nerdy, unappreciative roommate? Well, things can only get more exciting from here, can’t they? Added Dec 2018 3,147 words 21,172 views 4.9 stars (26 votes)
- Sk8r dreams: Odds and ends by Reaver Cock Dumber Tf AgeDn Mind Series This story is set in the Sk8r Dreams universe, but is intended to stand alone. It's a little like the “Spells 'R Us” (SRU) stories, but with hopefully a slightly different slant to it. Added Oct 2003 3,295 words 4,845 views
- The source: a Henry Himura mystery by Proteus CockUp Cock Dumber MuscUp Musc Grad PSD Hairier Henry is hired to track down a missing young man named Samuel Roth. The trail leads him to a gym and a mysterious serum called Hard-T. Added Aug 2013 11 parts 15,896 words 18,872 views 5.0 stars (10 votes)
- The start of something good by falseeyedee CockUp Cock Dumber MuscUp Musc Nonc Added Apr 2003 3,544 words 9,611 views
- The streamer by MuscleNexus Dumber Mental MuscUp FootUp Voice SocMed Daniel psyches himself up for his first Twitch livestream. Maybe he should try doing a low-risk midnight dry run with that obscure game he downloaded… Added Jul 2021 1,434 words 3,661 views
- Stuck in the neighborhood by Cris Kane Fem Dumber Mental 2Gay Tf Nonc Lycra Swap Pride Brett is annoyed that the gay pride parade won’t let him get where he wants to go. Added Jun 2021 4,305 words 1,334 views
- Summer research by spacevlad CockUp Balls Cock HyCock Dumber Mental 2Gay HyMusc HyStr MuscUp Gut Musc Scent BellyUp Taller Giant PSD SizeUp Hairier Viol Slave 4th of Jul Dave, an ambitious researcher at a well-known university, hires an eager-to-grow football player to test an experimental growth supplement. The experimental growth supplement works much better than anticipated and Grunt gains over 50 pounds in just a week, though with some troubling side-effects. Added Oct 2017 Updated Dec 2017 12 parts 28,541 words 34,079 views 4.8 stars (24 votes)