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”; “The six pack”; “Mariposa honeymoon: A six-pack story”.
23 stories found. Total word count: 318,490.
- Administrator by FanTCMan Cock CockUp Dumber Musc MuscUp Added Apr 2003 1,784 words 22,118 views 4.1 stars (7 votes)
- Anything to grow by Big Bull Trainer Dumber Immob Musc MuscUp SizeUp Tf 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 34,126 views 4.4 stars (12 votes)
- An app for the ages by Seth Peterson Cock CockUp Dumber Fem Hairier MusBr Musc MuscUp Nonc Taller 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 18,844 views
- The six pack by Cris Kane 2Gay BellyUp CockDn CockUp Dumber Fem Hairier MFSwap MuscUp Race SizeDn SizeUp Taller Tf Series Returning from a Mexican vacation, a gay couple bring back a mysterious drink for their friends to try, bringing on some changes for the group of friends that require a great deal of getting used to. Added Sep 2018 9 parts 38,564 words 16,961 views 4.9 stars (9 votes)
- Sk8r dreams: Odds and ends by Reaver AgeDn Cock Dumber Mind Tf 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 4,606 views
- The source: a Henry Himura mystery by Proteus Cock CockUp Dumber Grad Hairier Musc MuscUp PSD 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 18,380 views 5.0 stars (5 votes)
- Summer research by spacevlad 4th of Jul Cock Dumber Giant Hairier HyStr Musc MuscUp PSD SizeUp Viol 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 30,565 views 4.8 stars (22 votes)