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”.

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 boost by Cris Kane  2Gay Dumber Musc MuscUp  The mysterious boost in a health club’s smoothies causes fast and dramatic changes. Added Jul 2015 2 parts 12,889 words 19,685 views 4.9 stars (7 votes)
• Boy in a bag by Absman420  AgeDn Cock CockUp Dumber Mental Musc MuscUp Nonc  Maybe there’s such a thing as too much hormone therapy… Added Oct 2020 7,534 words 7,168 views 4.5 stars (6 votes)

• Chad gets collared by Portowulf  2Gay Dumber Mind Slave Virgin  Roommates Rohan and Chad find an alternative use to a failed experimental device. Added May 2020 2,027 words 3,788 views

• Daddy’s boy by Seth Peterson  2Gay Cock CockUp Dom Dumber Hairier Hum MusBr Musc MuscUp NipCum  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 21,737 views 4.8 stars (14 votes)
• David devolving by FanTCMan  Dumber Musc MuscUp Nonc   Added Sep 2003 2 parts 9,538 words 35,833 views 4.7 stars (11 votes)

• Fantastic island by FanTCMan  Cock CockUp Dumber HyCock Musc MuscUp 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 27,132 views 4.6 stars (31 votes)
• Frat boys, bro!! by Seth Peterson  Balls BellyUp Cock Dumber Fatter Gut Hairier Musc MuscUp SizeUp  What happens when a handsome boy and his buddy finds some frat boy pills? Sick bulky results, BRO!! Added Jan 2018 2,556 words 28,933 views 3.8 stars (34 votes)

• Gym class hero by Portowulf  BellyUp CockUp Dumber Fatter MusBr Musc MuscUp  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 4,527 views

• Hypno muscle: jock dreams by Douglas Benjamin  2Inan Dumber HyMusc Hypno Mind Musc MuscDn MuscUp Orcs Scent SizeDn SizeUp Sugg Taller 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 10,185 views

• Karma pills by Musiker  NoCock 2Gay Balls Cock CockDn CockUp Dom Dumber Fluids Fur Grad Hum HyAnus HyCum Mental Mind Musc MuscUp Nonc PSD SizeUp Slave Taller  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 18,518 views 3.7 stars (16 votes)

• Mariposa honeymoon: A six-pack story by Cris Kane  BellyUp Cock CockDn CockUp Dumber Hairier Mental Musc MuscUp 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 12,883 views 4.5 stars (10 votes)
• Mimbo drops by Absman420  2Gay Cock CockUp Dumber Mind Musc MuscUp Nonc Rape 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 41,828 views 4.7 stars (28 votes)

• No shirt, no service by Cris Kane  Dumber Mental Musc MuscUp Tf  The uptight clerk at a beachside art gallery is given a makeover to better suit his surroundings. Added Jun 2019 3,879 words 5,266 views

• Position wanted by Cris Kane  2Gay AgeDn Cock Dumber Mental Musc MuscUp Race  A job agency tailors a middle-aged man’s resume to make him a more attractive prospect. Added Jan 2020 3,430 words 4,290 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)

• True pups by Douglas Benjamin  2Animal Dom Dumber Fur Mind Musc MuscUp 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 16,193 views 3.6 stars (7 votes)

• X-Dream Makeover by Cris Kane  AgeUp Dumber Mental MuscUp 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 7,588 views 5.0 stars (5 votes)