Getting Dumber

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”.

Recently Updated: “Boy in a bag”.

23 stories found.

• Administrator by FanTCMan  CGrow Dumb Cock MGrow Musc   Added Apr 2003 1,784 words 20,937 views 4.1 stars (7 votes)
• Anything to grow by Big Bull Trainer  Dumb Immob MGrow Musc Grow 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 31,840 views 4.4 stars (12 votes)
• An app for the ages by Seth Peterson  Fem CGrow Dumb Hair Taller Cock MusBr MGrow Musc 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 16,390 views

• The boost by Cris Kane  Dumb MGrow Musc 2Gay  The mysterious boost in a health club’s smoothies causes fast and dramatic changes. Added Jul 2015 2 parts 12,889 words 18,904 views 4.9 stars (7 votes)
• Boy in a bag by Absman420  AgeDown CGrow Dumb Cock MGrow Musc Nonc Mental  Maybe there’s such a thing as too much hormone therapy… Added Oct 2020 7,534 words 4,607 views

• Chad gets collared by Portowulf  Virgin Dumb Mind Slave 2Gay  Roommates Rohan and Chad find an alternative use to a failed experimental device. Added May 2020 2,027 words 2,706 views

• Daddy’s boy by Seth Peterson  CGrow Dom Dumb Hair Cock Hum MusBr MGrow Musc NipCum 2Gay  What happens when a cocky, overly narcissistic businessman oversteps courtesy? Why, muscle-growing, mind-altering, submission-inducing karma, of course! Added Jun 2018 2,534 words 19,113 views 5.0 stars (11 votes)
• David devolving by FanTCMan  Dumb MGrow Musc Nonc   Added Sep 2003 2 parts 9,538 words 34,316 views 4.7 stars (11 votes)

• Fantastic island by FanTCMan  CGrow Dumb Cock HyCock MGrow Musc Nonc Self  Gene’s island vacation takes a sudden twist when he meets a handsome stranger and has a drink with him, only to wake up blearily to encounter the man’s muscle giant fuck toy... and his own body is feeling very strange... Added Jul 2014 5,249 words 26,070 views 4.6 stars (31 votes)
• Frat boys, bro!! by Seth Peterson  Belly Dumb Fat Hair Balls Cock MGrow Gut Musc Grow  What happens when a handsome boy and his buddy finds some frat boy pills? Sick bulky results, BRO!! Added Jan 2018 2,556 words 26,159 views 3.8 stars (34 votes)

• Gym class hero by Portowulf  Belly CGrow Dumb Fat MusBr MGrow Musc  Engineering student Dominic Wilde becomes the unexpected recipient of the “gym class hero” title during his college senior year. Added May 2020 2,219 words 3,330 views

• Hypno muscle: jock dreams by Douglas Benjamin  Dumb Taller Inan HMusc Hypno Scent Mind MGrow MTheft Musc Orcs Shr Grow Sugg Tf  Toby and Liam have picked up a hypnotic audio tape that promises to grow their muscles. When they fall asleep to the hypnotic induction, they have a dream that seems all too real: Suddenly, they have to power to transform each other into big-muscled meatheads, flexing and posing for each other and talking like dumb jocks. Even more transformation is possible, but there is a catch. Added Jul 2019 4,333 words 8,113 views

• Karma pills by Musiker  Fur Fluids CGrow CShr Cockless Dom Dumb Taller Grad Balls Cock Hum BHole Cum Mind MGrow Musc Nonc Mental PSD Slave Grow 2Gay  Steve has been bullying the other members of Matt's Gym for ten years. When Matt gives Steve a new kind of muscle-enhancing pill, he conveniently forgets to mention some significant side effects. Added Jun 2019 Updated Jul 2019 5 parts 24,186 words 15,784 views 3.6 stars (14 votes)

• Mariposa honeymoon: A six-pack story by Cris Kane  Belly CGrow CShr Dumb Hair Cock MGrow Musc Mental Race Series  Their flamboyant best-man Pierce gives strait-laced newlyweds Derek and Charles a mysterious six-pack to liven up their Cancun honeymoon. Added Dec 2018 Updated Feb 2019 19 parts 105,833 words 11,177 views 4.4 stars (8 votes)
• Mimbo drops by Absman420  CGrow Dumb Cock Mind MGrow Musc Nonc Rape 2Gay Tf  Tom receives a secret serum that turns men into horny, dumb, huge-cocked muscle hunks. He decides to try it out on his bicycling buddy Sam, and discovers it’s extremely effective—especially in multiple doses. Added Jul 2011 2 parts 13,794 words 38,468 views 4.7 stars (26 votes)

• No shirt, no service by Cris Kane  Dumb MGrow Musc Mental Tf  The uptight clerk at a beachside art gallery is given a makeover to better suit his surroundings. Added Jun 2019 3,879 words 4,696 views

• Position wanted by Cris Kane  AgeDown Dumb Cock MGrow Musc Mental Race 2Gay  A job agency tailors a middle-aged man’s resume to make him a more attractive prospect. Added Jan 2020 3,430 words 3,370 views

• The six pack by Cris Kane  Belly Fem CGrow CShr MFSwap Dumb Hair Taller MGrow Race Shr Grow 2Gay 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 15,084 views 4.9 stars (9 votes)
• Sk8r dreams: Odds and ends by Reaver  AgeDown Dumb Cock 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 4,157 views
• The source: a Henry Himura mystery by Proteus  CGrow Dumb Hair Grad Cock MGrow Musc PSD  Henry is hired to track down a missing young man names Samuel Roth. The trail leads him to a gym and a mysterious serum called Hard-T. Added Aug 2013 11 parts 15,896 words 17,071 views
• Summer research by spacevlad  Viol Dumb Hair Giant Cock Strong MGrow Musc PSD Grow  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 28,006 views 4.8 stars (17 votes)

• True pups by Douglas Benjamin  Fur Dom Dumb 2Anim Mind MGrow Musc Tf  Two men wander into the wrong bar, and soon find their bodies growing huge with muscle as their minds go to the dogs. Added Jan 2017 3,904 words 15,148 views 3.6 stars (7 votes)

• X-Dream Makeover by Cris Kane  AgeUp Dumb MGrow Mental Tf Series  Rich from selling his tech stocks, David hopes to improve his love life with a makeover from a mysterious shop in Chinatown. Added Sep 2018 4 parts 15,543 words 6,987 views 5.0 stars (5 votes)