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”; “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)

• The boost by Cris Kane  Dumber 2Gay MuscUp Musc  The mysterious boost in a health club’s smoothies causes fast and dramatic changes. Added Jul 2015 2 parts 12,889 words 20,108 views 4.9 stars (8 votes)
• Boy in a bag by Absman420  CockUp Cock Dumber Mental MuscUp Musc AgeDn Nonc  Maybe there’s such a thing as too much hormone therapy… Added Oct 2020 7,534 words 8,382 views 4.7 stars (9 votes)

• Chad gets collared by Portowulf  Dumber 2Gay Virgin Slave Mind  Roommates Rohan and Chad find an alternative use to a failed experimental device. Added May 2020 2,027 words 4,459 views

• Daddy’s boy by Seth Peterson  CockUp Cock NipCum Dumber 2Gay MusBr MuscUp Musc Hairier Dom Hum  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 23,208 views 4.8 stars (14 votes)
• David devolving by FanTCMan  CockUp Balls Cock Dumber 2Gay MuscUp Musc Nonc   Added Sep 2003 2 parts 9,538 words 36,865 views 4.8 stars (14 votes)

• Fantastic island by FanTCMan  CockUp Cock HyCock Self Dumber MuscUp Musc Nonc  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 27,713 views 4.6 stars (32 votes)
• Frat boys, bro!! by Seth Peterson  Balls Cock Dumber MuscUp Gut Musc BellyUp SizeUp Hairier Fatter  What happens when a handsome boy and his buddy finds some frat boy pills? Sick bulky results, BRO!! Added Jan 2018 2,556 words 30,670 views 3.9 stars (36 votes)

• Gym class hero by Portowulf  CockUp Dumber MusBr MuscUp Musc BellyUp Fatter  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 5,228 views

• The hike by Unknown  HyCock Dumber 2Gay MuscUp Musc Hairier Nonc M M/M  Trying to get away from things after a breakup with a hike into the wilderness, Steve discovers a strange cavern adorned with drawings of men possessed of freakishly large muscles and cocks. It’s not long before he discovers the reason for the drawings. Added Sep 2003 Updated Sep 2012 4,189 words 11,986 views 4.7 stars (9 votes)
• Hypno muscle: jock dreams by Douglas Benjamin  Dumber HyMusc MuscUp MuscDn Musc Scent Tf Taller SizeDn SizeUp 2Inan Sugg Orcs Hypno Mind  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 11,815 views

• The institute by FanTCMan  CockUp Dumber Mental MuscUp Musc Libido Hairier  Two intrepid newsmen get a little too close to the story. Added Dec 2002 2,641 words 11,457 views 4.4 stars (5 votes)

• Karma pills by Musiker  CockUp CockDn NoCock Balls Cock HyCum Dumber Mental 2Gay MuscUp Musc HyAnus Grad Taller PSD SizeUp Dom Hum Nonc Slave Fluids Fur Mind  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 20,018 views 3.7 stars (16 votes)

• Livin la vida loca by Onix  Dumber 2Gay Race Nonc Slave Hypno Mind  I wasn’t always like this… but Steve—I mean my Master says I won’t be able to remember any of that in a little while. Added Apr 2003 9,347 words 12,176 views

• Mariposa honeymoon: A six-pack story by Cris Kane  CockUp CockDn Cock Dumber Mental MuscUp Musc AssUp BellyUp Libido SizeDn SizeUp AgeDn Race Hairier Witch 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 13,988 views 4.5 stars (11 votes)
• Mimbo drops by Absman420  CockUp Cock Dumber 2Gay MuscUp Musc Tf Nonc Rape Mind  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 43,545 views 4.7 stars (30 votes)

• No shirt, no service by Cris Kane  Dumber Mental MuscUp Musc Tf  The uptight clerk at a beachside art gallery is given a makeover to better suit his surroundings. Added Jun 2019 3,879 words 5,584 views

• Position wanted by Cris Kane  Cock Dumber Mental 2Gay MuscUp Musc AgeDn Race Retcon  A job agency tailors a middle-aged man’s resume to make him a more attractive prospect. Added Jan 2020 3,430 words 4,836 views

• 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)

• True pups by Douglas Benjamin  Dumber MuscUp Musc Tf 2Animal Dom Fur Mind  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 16,893 views 3.6 stars (7 votes)

• X-Dream Makeover by Cris Kane  Dumber Mental MuscUp Tf AgeUp 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 7,913 views 5.0 stars (5 votes)