Brothers

Stories that feature intimate relations between brothers (not necessarily actual sex, though this is often the case).

Related: Father/Son; Twins.

Child of: Incest.

Top Stories: “Jason’s big problem”; “All good things”; “Mind and body”; “My roommate (complete)”; “Empire”; “Baby brother”; “The brothers”; “17 inches”; “The salt”; “Alpha product series”.

Recently Updated: “The Wizard of Hot”; “One hot summer”; “My roommate (complete)”; “Body game: Encounter 813”.

101 stories found. Total word count: 2,110,864.

• Adam’s first growth spurt by MDS  Cock MuscUp Musc Giant SizeUp Inc Bro  Adam comes home from a day of being bullied at school to find he definitely won't have to worry about anything like that after today. Added Nov 2016 2,350 words 37,442 views 4.3 stars (14 votes)
• Alex’s gift by Will Bowden  Inc Bro Shift  A teen discovers his shapeshifting ability, which seems to be tied to the horniness of other guys. Added Apr 2003 3 parts 4,345 words 35,350 views 4.5 stars (11 votes)
• All good things by Anon Amon  CockUp Balls Cock HyCock CumInf HyCum NipCum 2Gay Immob MuscUp Musc Inc Bro Twins Infect  After the discovery of an ancient artifact, life is changed forever for a group of college students who have bigger things to worry about than getting ready to start classes. Added Feb 2017 Updated Oct 2020 104 parts 119,339 words 159,048 views 4.5 stars (126 votes)
• Alpha Luke grows his circle by Eric Aaldersen  Balls Cock MuscUp Musc Inc Bro Supn Series  Now fully aware of his alphahood, Luke breeds some more betas hoping to make Brian an alpha like him. Luke and Mike finally bond as they were meant to. Added Mar 2020 8,980 words 6,089 views 5.0 stars (10 votes)
• Alpha Mike and his alpha bro by Eric Aaldersen  CockUp Balls Cock MuscUp Musc Grad Inc Bro Supn Series  Meet Alpha Mike, Luke’s older brother, on the day that he discovers that his little bro is an alpha, too! Added Mar 2020 5,437 words 6,239 views 4.6 stars (19 votes)
• Alpha product series by Chet Boner  CockUp Balls HyCum NipCum MuscUp Musc AgeDiff Inc Bro Dad Images  19-year-old Trent accepts a free trial product series called “Alpha Product” in exchange for his feedback. He receives the first product very quickly, but doesn’t know how many people would be affected and grow as a result of this choice! Added May 2017 Updated May 2019 19 parts 23,227 words 63,622 views 4.3 stars (41 votes)
• Another big morning by Thatbadwriter  CockUp Balls Cock HyCock HyCum MuscUp Musc Giant SizeUp Inc Bro Dad Viol  It never fails. You’re sitting there on the living room floor with your cereal trying to watch some TV, when your dad comes down and decides Saturday morning is the perfect time to start growing and getting himself off. And then your horny brother comes home… Added Nov 2020 1,226 words 9,290 views
• The awakening by Johnny M  HyCum NipCum MusBr Musc AgeDiff Inc Bro Dad  Danny’s secret muscle-breast fantasy kink begins bleeding into the real world. Added Jul 2012 10 parts 24,690 words 50,971 views 4.6 stars (15 votes)

• Baby brother by Shawn D. Stewart  CockUp MuscUp Musc Taller Inc Bro  "Kev, did you see a glass here?” “Whoa, man, was that yours? Sorry… I was really thirsty…” “You drank it!?” Aaaaand off we go! Added Mar 2003 2,879 words 102,174 views 4.3 stars (32 votes)
• Bending the straight boys by iciss  CockUp Cock 2Gay MuscUp Musc Virgin Inc Bro Twins  At first all those hot straight guys seemed like real jerks. And then they started getting hunkier, and hornier, and a lot more aware of each other. Added Jan 2008 2 parts 11,063 words 54,311 views 4.7 stars (34 votes)
• Ben’s escapades by Kaelan  CockUp Balls Cock HyCock Self HyCum NipCum MuscUp Musc Grad Inc Bro  Ben undergoes medical treatment to make his genitals unusually huge, but is he ready for the dramatic changes that it’ll bring to the rest of his life? Added Feb 2018 Updated Jun 2018 9 parts 33,606 words 43,731 views 4.7 stars (32 votes)
• Beta Logan and his big brother by Eric Aaldersen  CockUp Balls Cock HyCum HyStr MuscUp Musc Grad Inc Bro HyPher Supn Series  Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud. Added Jun 2020 6,499 words 10,403 views 5.0 stars (13 votes)
• Body game: Encounter 813 by BRK  AlwHard CockUp Balls Cock HyCock HyCum XDig XAbs XCock XArms XLimb XPec XTongue Rep Stack MuscUp Str FootUp Taller PSD SizeUp Hairier HyTongue TongueGr Mcock Inc Bro Series M/M M/M/M  Reggie isn’t sure why the team-building get-together for the web design firm he’s working for is being held at an abandoned mall; he just knows he can’t get his sexy boss out of his mind. Added May 2016 Updated Jun 2021 9 parts 49,133 words 31,821 views 4.9 stars (22 votes)
• The bodyguards by Alakazam1988  CockUp Balls Cock MuscUp Musc PSD SizeUp Infl Inc Bro Twins  Two already huge and beautiful brothers apply for a job guarding a man who might be able to help them get even bigger. Added Apr 2021 Updated May 2021 4 parts 7,528 words 12,592 views 4.9 stars (23 votes)
• The box by BRK  CockUp XDig XCock 4Legs XArms XLeg XLimb Rep Str Virgin Inc Bro Series M/M M/M/M M/M/M/...  Steve gets a box of clothes from his mysterious and beautiful brother, Peter, and it turns out the clothes have an amazing effect on his already unusual body. Added Dec 2002 Updated Sep 2019 8 parts 29,657 words 21,872 views 5.0 stars (12 votes)
• Brandon’s bro by FanTCMan  CockUp Cock MuscUp Musc Hairier Inc Bro  Brandon initiates his brother onto a secret society of guys who are being made more and more muscular, hung, and sexy. Added Jan 2017 4 parts 8,692 words 20,706 views 4.6 stars (21 votes)
• Brother dear by MsclGuy  Musc Inc Bro   Added Jul 2002 766 words 24,483 views 3.9 stars (8 votes)
• Brother’s closet by Josh Dugan  Llegs XLeg XLimb Rep Det Inc Bro  A handsome athletic older brother offers somewhat more than expected. Added May 2002 962 words 19,327 views 4.0 stars (5 votes)
• Brotherly love by Seth Peterson  CockUp Balls Cock HyCock MuscUp Gut Musc Taller SizeUp Inc Bro Merg  Two brothers get the best weekend they can imagine through the use of some very special, very wonderful powers. Rest assured, the results are BIG. Added Dec 2015 7,666 words 36,419 views 4.8 stars (16 votes)
• Brotherly love by TheSizeKing  CockUp Cock HyCock MuscUp Musc Taller SizeUp Inc Bro  Reece is a 20-year-old guy who has everything going for him in life: good looks, good brains, good personality, even a well-above average endowment between his legs. His younger brother, Michael, is exactly the opposite. Michael is about to turn 18, and could use a little boost before he goes out into the adult world. Added Apr 2020 5 parts 7,816 words 9,864 views 4.9 stars (11 votes)
• The brothers by FanTCMan  AlwHard CockUp Cock Addict 2Gay MuscUp Musc Grad Hairier Inc Bro  Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. Added Mar 2003 8 parts 22,620 words 90,283 views 4.8 stars (87 votes)

• Christmas wish by Riu  CockUp Cock HyCock 2Gay MuscUp Musc Sugg Inc Bro Xmas  Two grown-up brothers follow their childhood tradition of waiting up for Santa. Only this time, after a few shots of special whiskey, a different kind of Christmas wish is granted. Added Dec 2016 3,925 words 20,478 views 4.9 stars (20 votes)
• The chronicles of Besar Otot by OneLuckyGuy89  CockUp Cock HyCock XCock MFSwap 2Gay MuscUp Musc Tf Taller PSD SizeUp AgeUp Hairier AgeDiff Inc Bro Dad Nonc HyPher  On a distant unknown island near Indonesia called Besar Otot, Kenny Masters returns home a new man and intends to change his family as well. Added Jan 2020 Updated May 2021 8 parts 25,601 words 10,378 views
• Cock tongue fun by lock444  Mcock Inc Bro  Charlie’s mischievous friend Mike discovers Charlie’s brother has a magical device that turns tongues into cocks. Added Jun 2013 2,412 words 12,938 views 4.5 stars (6 votes)
• Comeuppance by JJJJohnson  CockUp Balls Cock MuscUp Musc Giant SizeUp Inc Bro Twins  No more than one tablespoon each, huh? Suuuuuure! Added May 2006 4,071 words 39,538 views 4.5 stars (17 votes)
• Cool bracelet, bro by BRK  AlwHard CockUp Cock HyCock Self XCock XHead XArms XLeg XLimb 3Legs XPec Stack MuscUp Musc Retcon Sugg Inc Bro t/t t/t/t  Shortly after acquiring a mysterious leather bracelet, Pete and his kid brother Quentin have a conversation that leads rapidly toward just how hung Pete is, and how horny that makes his brother. Added Feb 2014 Updated Mar 2018 5 parts 16,745 words 57,265 views 4.6 stars (45 votes)

• Damian and the three muscleteens by hyperboi  CockUp Cock HyCock 2Gay MuscUp Musc AgeDiff Inc Bro Dad Twins Infect   Added Dec 2012 5 parts 8,169 words 48,438 views 4.3 stars (26 votes)
• A day at the beach by Three-Legged Dude  XLimb Str Det Inc Bro   Added Apr 2003 723 words 14,768 views 3.3 stars (8 votes)
• Demon brand jeans by alwaysmyway  Wings MuscUp Musc Inc Bro Hallow Fly  Shopping for creepy Halloween costumes at the last minute is probably not a good idea. Added Aug 2012 6,033 words 24,857 views 4.5 stars (20 votes)
• Dig’s island by BRK  CockUp Cock XArms Wings MuscUp Musc Taller SizeUp Inc Bro Fly 19th Cent M/M/M/...  Shipwrecked on a remote island, four brothers grow up to be incredibly close—and that’s before they encounter a secret power on the island that transforms them each in different ways. Added Mar 2005 4 parts 3,757 words 22,341 views 4.3 stars (7 votes)
• The djinn by hyperboi  CockUp Cock HyCock MuscUp Musc Inc Bro Twins Genie   Added Dec 2012 8 parts 14,201 words 32,290 views 4.8 stars (15 votes)

• The e-journal by hyperboi  CockUp Balls Cock XBalls XCock MuscUp Musc Retcon Inc Bro Nonc  Tyler’s birthday is not going well: no one can come, not even his parents, and his big brother is being an obnoxious bully as usual. Plus he’s horny as heck. At least his best friend gave him a gift: an e-journal. He decides to write in it not about the way things are, but the way he wants things to be. Added Jul 2018 3,597 words 12,326 views 4.5 stars (20 votes)
• Empire by LenZelig  CockUp Cock Self 2Gay MuscUp Musc Taller SizeUp AgeDiff Beast Virgin Inc Bro Dad Twins Bi Het Nonc Slave Share Alien Space Tksg Mind Series  A massive consolidation of the entire “Bill’s Education” universe, incorporating the previously separately posted “The Surfer”, “The Rescue”, “Spring Break”, “Pickup Trouble”, and “School Days”, “Empire” is the wide-ranging tale of easy transformation and even easier sex across all boundaries—friends, family members, genders, even species—as a fortunate crop of humans stumble into a wider universe of size, muscle, double-digit-length cocks and much, much more and discover the true meaning of shared, radical, uninhibited pleasure. Added Apr 2019 Updated May 2021 40 parts 365,561 words 114,841 views 4.8 stars (38 votes)
• The escape by hyperboi  CockUp Cock HyCock Self 2Gay MuscUp Musc Inc Bro Twins Nonc Alien  Sam and his brother find themselves taken in their sleep and trapped in some strange warehouse-like space, along with all the other teens in their community. Not only is there no way out, but something is happening to them all... Added Dec 2014 3,492 words 20,468 views 4.7 stars (20 votes)

• Family trouble by HandsomeLitleBoy  CockUp Balls Cock HyCum MuscUp Taller Inc Bro Twins  Max starts to notice some strange behavior from his big brother Brad—behavior that involves ungodly amounts of cum. Added Oct 2020 2 parts 2,454 words 6,088 views 4.7 stars (6 votes)
• Family values by FanTCMan  Cock 2Gay MuscUp Musc Hairier Inc Bro  Visiting his brothers in California leads to surprise after surprise, starting with their being much bigger than they had been before... Added Jul 2014 1,448 words 26,032 views 3.9 stars (30 votes)
• Finding Owen by BRK  Cock MuscUp Musc Taller PSD SizeUp Hairier Inc Bro Viol Wbear Were Supn Series  Owen Banks witnessed Max finding his destiny up on the mountain, then realized he was changing, too. Was he like Max, or was something else awakening within him? He decided he was going to find out. Added Aug 2019 Updated May 2021 8 parts 52,629 words 18,058 views 4.9 stars (15 votes)
• The formula by hyperboi  CockUp Cock HyCock Self MuscUp Musc AgeDiff Inc Bro Dad Twins  Mike begs his genius friend Jeff to try coming up with a cock growth formula. Jeff assumes Mike doesn’t want to look too small when he goes out for the swim team, but the secret truth is, Mike’s ambitions aren’t limited to his own junk. Added Jan 2021 Updated Feb 2021 4 parts 14,631 words 16,415 views 4.9 stars (28 votes)
• Four for the game by Clearlyhere  CockUp CockDn Cock MuscUp Musc Handsomer SizeUp Inc Bro Swap  Four jocks play a body changing game. Added Feb 2017 2,962 words 16,088 views 4.5 stars (19 votes)
• The four jocks: Online edition by BRK  AlwHard CockUp Cock XCock XLimb XTorso Rep MuscUp Musc Mcock Inc Bro Series M/M M/M/M/...  A futuristic all-virtual version of the game leads to transformations in their already-tweaked full-body avatars, which they’re able to experience in the VR space as if they were their real bodies. Added Jul 2012 3 parts 7,578 words 16,035 views 4.6 stars (7 votes)
• The four jocks: At the lake by BRK  AlwHard CockUp Cock XCock XArms XLimb MuscUp Musc Sugg Inc Bro Twins Series M/M M/M/M/...  When Dane and his brother Sean go on a celebratory road trip after finishing college, Sean's best friends, the Fernandez twins, naturally tag along. But their trip takes a strange turn right out of the gate, not least thanks to a game the guys find in their room at the lakeside bed and breakfast. Added Jul 2017 5,950 words 9,632 views 4.4 stars (11 votes)
• The four jocks: College buddies by NBCK99  AlwHard CockUp Cock Self XCock XLimb MuscUp Musc Retcon Inc Bro Series  NBCK99 tries his hand at a "Four Jocks" story, involving four insanely hot jocks growing and changing each other as they feed each others’ attraction and arousal. Added Aug 2015 4,873 words 17,358 views 4.9 stars (16 votes)
• The four jocks: Horny teens by hyperboi  CockUp Balls Cock HyCock NipCum XCock Btaur 4Legs XArms Rep MuscUp Musc Taller SizeUp Inc Bro Series   Added Apr 2014 3 parts 7,484 words 28,509 views 4.8 stars (6 votes)
• Frank’s boyss by Multiple Authors  Cock XCock XLimb Inc Bro   Added Mar 2009 2 parts 5,815 words 16,250 views
• Frat hunting by hyperboi  CockUp HyCock MuscUp Musc Sugg Inc Bro Twins  A pair of twins with the ability to alter themselves and the world around them have some fun tailoring one of the frats to meet their needs. Added Jul 2013 Updated Aug 2013 1,543 words 26,084 views 4.5 stars (17 votes)
• A fucking god by Jerkoffcentral  CockUp Balls Cock HyCum HyMusc MuscUp Musc Inc Bro  A teenager is both exasperated and incredibly turned on by how his body and everything about it seems to be getting freakier and freakier. Added Mar 2019 Updated Jun 2020 2 parts 5,278 words 26,021 views 4.5 stars (17 votes)

• Greg and Jesse by BRK  CockUp Cock XCock XHead XArms XLeg XLimb XPec Rep Stack Bro Merg Weed t/t t/t/t  Greg and Jesse are already pretty close. But the addition of a little premium weed combined with a video chat session makes them even closer. Added Mar 2009 Updated Jan 2018 3 parts 6,991 words 27,822 views 4.6 stars (19 votes)
• Growing closer by Chance Micheals  CockUp Cock MuscUp Musc Inc Bro  Spying on Luke, the object of his lust, young Gareth discovers that Luke is even more special than he thought—and then Luke’s brother shows up. Added Jun 2015 1,018 words 13,993 views 4.1 stars (18 votes)

• The Halloween costume by frooooooo  Inc Bro Merg Hallow  A Halloween costume you share with your brother? Might be fun. What's the worst that could happen? Added Oct 2012 2,220 words 16,323 views 4.0 stars (7 votes)
• Have yourself a megalithic Christmas by Ziel  CockUp Cock HyCock Giant SizeUp Inc Bro Xmas Series  A sort of sequel/follow up/spin off to “A Miracle on 69th Street”. This time the story focuses on Calvin, a down on his luck dude who has long suffered under his overbearing and outright mean-spirited older brother, but all that’s about to change. It’s Calvin’s turn to be the “big” brother in every sense of the word. Added Dec 2016 8,115 words 10,260 views 3.6 stars (7 votes)
• His brother drains his manhood by Ballmeat  CockUp CockDn MuscUp MuscDn Musc Inc Bro Nonc  A younger brother drains his big, strong, overconfident older brother of his cock, balls and muscle. Added Jan 2018 2,593 words 41,022 views 4.1 stars (28 votes)
• Home for the holidays by Richard Jasper  CockUp Cock MuscUp Musc Taller Inc Bro Xmas  Chris Kirkpatrick, an 18-year-old high school Big Man on Campus, is eager to see his slightly older brother Roger back “home for the holidays” after his first semester as a freshman at State. Boy, is he in for a surprise! Added Dec 2020 3,149 words 3,958 views
• How it’s done by phallicphan  Musc Virgin Inc Bro Cent  College centaur shows his younger brother how to breed. Added Oct 2017 4,189 words 7,511 views 5.0 stars (6 votes)

• I wanna get huge by JayPat  MuscUp Musc SizeUp Inc Bro Xmas ValDay Series  “I wanna get huge,” he said. Added Oct 2012 2 parts 21,281 words 49,865 views 4.4 stars (22 votes)
• Induced transformation: a brief history by BRK  CockUp Cock HyCock HyCum Rep MuscUp AgeDn App Retcon AgeDiff Inc Bro Dad Nonc Infect Dialog  A father explains to his son that back in his day, they didn’t have any of these fancy-schmancy apps with built-in retcon. Back then, if you changed someone, they changed, and everyone had to just suck it up and deal with it. Added Jun 2020 2,248 words 5,757 views 5.0 stars (12 votes)

• Jason’s big problem by Joven  CockUp Balls Cock HyCock HyCum MuscUp Musc Taller SizeUp Inc Bro  Teen athlete Jason unwittingly becomes part of a shady experiment to produce progressively larger cocks and balls that generate way too much cum. His playful and curious friends get drawn in, and when his cranky brother is roped in as well, having massive equipment becomes even more difficult. Added Oct 2013 Updated Nov 2017 49 parts 114,700 words 160,499 views 4.5 stars (74 votes)

• The Latin twins by RdyRoger  CockUp CockDn Balls Cock 2Gay MuscUp Musc Grad Taller SizeDn SizeUp Race Sugg Inc Bro Dom  A man is gifted by "the watchers" to make changes to himself and others that will last for 24 hours. Two of his escapades are detailed in this story. Added Apr 2012 2 parts 7,238 words 33,710 views 4.6 stars (8 votes)
• Little bro by Ziel  CockUp Cock HyCock MuscUp Musc Giant SizeUp Inc Bro  Hunky big bro Liam has always teased his puny kid brother Connell. But after his accident, Connell got some experimental treatments that are guaranteed to change who calls who the “little bro” from now on. Added Apr 2017 5,382 words 33,061 views 4.7 stars (15 votes)
• Lockdown gym by BRK  AlwHard CockUp Cock Rep 2Gay MuscUp Musc Worship NoShirts Handsomer Grad Taller AgeDiff Inc Bro Twins Pandem  When Ed clears out his garage, his neighbor’s hunky college-age sons suggest converting the space to a lockdown gym for guys like them who want to maintain and can’t work out anywhere else. Despite the risk of distraction, Ed agrees, though the effect on his daily life turns out to be even greater than he expected. Added Apr 2021 3,110 words 5,230 views 4.7 stars (13 votes)
• Look what thinking can get you by Louis C. DePasquale  Musc Inc Bro Mind   Added Jun 2012 1,631 words 17,408 views 4.5 stars (11 votes)

• Male scent by Frank Easky  CockUp Balls Cock HyCock HyCum HyMusc MuscUp Musc Scent Taller Giant SizeUp AgeDn Hairier Inc Bro Twins HyPher Infect  Apprentice magician Sean’s potion exceeds his expectations, causing his personal musk to spread muscle growth to those who smell it. Added Jul 2002 2 parts 13,564 words 46,520 views 4.0 stars (15 votes)
• Matched pairs by Jerkoffcentral  CockUp Cock Self MuscUp Musc Virgin Inc Bro Bi  Peter becomes infected, not just with growth, but with a need for more strength and size. Added Oct 2013 Updated Jun 2016 14 parts 42,000 words 51,997 views 4.8 stars (29 votes)
• Max and Chris by Drillur  Cock HyCum Inc Bro  Two very hung brothers get tired of solo sex. Added Jul 2014 1,502 words 16,392 views 4.6 stars (24 votes)
• Metachange by LordTronimator  CockUp Balls Cock HyCock HyCum 4Legs XArms XLeg XLimb App Inc Bro Hum Nonc  Bullied 18-year old high school student Nathan just wants to spend his time in class doodling. But he’s always mocked for what he does. So what happens when a mysterious app suddenly shows up on his phone and promises to change things? Added May 2020 Updated Jun 2020 5 parts 8,689 words 5,506 views 4.6 stars (11 votes)
• The meteor shower by AGammer  CockUp Cock XCock XHead Inc Bro  When the meteor shower hits his farm, it has an unexpected effect on the teenaged, and very horny, William: a gift of changing himself and, as it turns out, his equally horny brother. Added Jan 2013 2 parts 2,738 words 11,734 views 4.0 stars (5 votes)
• Michael and jim by Your Name Here  CockUp Cock MuscUp Musc Hairier Inc Bro   Added Jul 2006 1,317 words 20,340 views 2.8 stars (6 votes)
• Mind and body by BRK  AlwHard CockUp Cock XCock 2Gay MuscUp Musc NoShirts Taller SizeUp App Sugg Inc Bro Hypno Mind  Jack discovers that his knack for hypnosis is actually much more powerful than it should be. Naturally, he uses this to get the upper hand with his sexy jock brother, but that turns out to be a lot more complicated than he’d thought. Added Jun 2012 Updated Jul 2017 16 parts 66,227 words 129,427 views 4.7 stars (92 votes)
• Misdirected by BRK  AlwHard CockUp Cock Self SizeUp Inc Bro  Ben doesn’t realize at first exactly why his annoying older brother’s secret rituals to make himself bigger and stronger are going wrong, only that he feels pretty strange himself lately. Added Oct 2009 6 parts 5,664 words 32,158 views 4.7 stars (19 votes)
• Musclove, Texas by Max Mann  CockUp HyCock MuscUp Musc AgeDiff Virgin Inc Bro Dad Twins Bond  Moving to Musclove, Texas with his sons to take up a new teaching position, Rick Long is startled to find a town full of huge, hung, and horny men, all of them eager to have the newcomers join them (in more ways than one). Added Sep 2004 9 parts 26,085 words 56,921 views 4.7 stars (44 votes)
• My brother was a teenage muscle freak! by Pump Culture  MuscUp Musc Inc Bro  This is a story of how my muscle fetish first got started and how my brother turned himself into a true muscle freak. Added Nov 2020 3,084 words 5,014 views 4.8 stars (5 votes)
• My brother’s boyfriend by Richard Jasper  Balls 2Gay HyMusc HyStr MuscUp Musc Taller SizeUp Inc Bro HyPher  Hunky, straight Marine Kyle is gobsmacked to find out that his bigger, hotter baby brother has an even bigger, hotter boyfriend! Added Feb 2020 5 parts 8,843 words 11,237 views 4.0 stars (7 votes)
• My roommate (complete) by LenZelig  CockUp Cock MuscUp Musc AgeDiff Virgin Inc Bro Dad Bi Het Dom Pride Mind  Bill’s hot adventures with his irresistible sex-god of a roommate, Andy Wang, and the others drawn into his adventures, combined with the stories of Andy’s son and his friends. (This revised and updated compilation version includes both “My Roommate” and “My Roommate: The Next Generation.”) Added Jul 2002 Updated Jun 2021 29 parts 222,742 words 118,035 views 4.9 stars (77 votes)

• Naked morph for ps2 by Male Enhancer  CockUp Cock MuscUp Musc SizeUp Inc Bro  Three brothers play a video game that has a direct effect on the people playing it. Added Jun 2013 4 parts 3,180 words 30,663 views 4.5 stars (24 votes)
• Necklace brothers by Levitate  MuscUp Musc SizeDn SizeUp Inc Bro Twins  A pair of undersized twins use a magical necklace to grow themselves—not realizing that the growth came with a price. Added May 2015 1,423 words 17,505 views 3.0 stars (5 votes)
• The new job by hyperboi  CockUp Cock HyCock HyMusc MuscUp Musc Grad SizeUp Inc Bro  Out-of-work engineer Jake takes a job at an isolated mansion, where he’s overpaid for just guarding a gate and letting through mysterious trucks. He and his coworkers are getting slowly bigger and hornier, too, and all this seems really great except for a certain nagging doubt—and a terrifying warning from the hugest of his fellow guards. Added Aug 2014 8 parts 20,447 words 30,668 views 4.6 stars (37 votes)
• The new simulation game by hyperboi  CockUp Cockfuck Cock HyCock 2Gay MuscUp Musc Inc Bro  On a weekend home from college, while he’s waiting for his brother to come home (and avoiding his hateful dad and sneering stepmom), muscle nerd Simon screws around with a new sim game he’d lucked into beta-testing—a game that turns out to be a lot more realistic than he’d expected. Added Mar 2016 5 parts 10,449 words 19,739 views 4.7 stars (16 votes)
• Nick by Anonymous  Cock Inc Bro   Added Apr 2003 1,846 words 19,999 views
• No strings attached by muscl4life  CockUp Cock HyCock CumInf MuscUp Musc SizeUp Inc Bro Twins Hypno  Donny walks in on his roommate, Sebastian, in the midst of his efforts to make himself bigger. Added May 2014 3 parts 39,280 words 40,517 views 4.4 stars (19 votes)

• One hot summer by BRK  AlwHard CockUp Cock Self Mental MuscUp Musc NoShirts Grad Taller Hairier Inc Bro Twins Nonc Pride Weed  Brandon and Eddie enjoy working for their pot-loving boss, Mike, at the pizza place near campus and are bummed they can’t stick around for the summer, too. Mike offers them a possible solution, though he doesn’t let them in on all his plans for the coming summer. Added Jun 2019 Updated Jun 2021 36 parts 76,165 words 33,163 views 4.9 stars (27 votes)
• Overshadowed by Cris Kane  Mental 2Gay Tf Inc Bro  Jealous of his jock older brother, gay misfit Lance gets a magical chance to change things. Added Apr 2019 2,658 words 5,488 views 2.6 stars (7 votes)

• Perfectly normal by EdIam  AlwHard Mental 2Gay NoShirts Retcon Inc Bro Dad Nonc  John is working on reality-bending science… but perhaps he should vet his employees a little more carefully. Added Jan 2021 8,364 words 3,009 views
• The power of suggestion by BRK  CockUp Cock XCock Rep MuscUp Musc SizeUp Sugg Inc Bro Series  On a long bus trip, Jordan can't help using his ability to suggest physical changes on his handsome seatmate, but things soon get out of hand. Added Feb 2009 1,878 words 39,075 views 4.8 stars (32 votes)

• Reality Pack by Thorn  CockUp Cock MusBr MuscUp Musc AssUp BellyUp Grad Taller PSD Hairier App AgeDiff Virgin Inc Bro Dad  What happens when the program you’re working on for school has a downloadable mod? You investigate it of course! Added Nov 2020 Updated Feb 2021 15 parts 79,094 words 23,622 views 5.0 stars (24 votes)
• The runner by LenZelig  Cock 2Gay Musc AgeDiff Inc Bro Dad Bi Het Dom Series  Jake is out for a morning run when he meets up with someone who is more than a man and looking for a different kind of exercise. Added Jun 2020 8,270 words 3,991 views

• The salt by RdyRoger  CockUp Cock MuscUp Musc Worship Libido Grad Taller SizeUp TongueGr Inc Bro Series  Trav gets his hands on some salts that cause all kinds of sexy growth and transformation. Using them on himself is great, but growing other people without their realizing it is even more fun. Added Jun 2010 9 parts 35,754 words 71,164 views 4.7 stars (18 votes)
• Say cheese and grow by hyperboi  CockUp Cock Self MuscUp Musc Grad Inc Bro  When Greg and his friends take a picture of themselves using a creepy camera, the resulting image shows them wildly transformed in different ways. They just think it’s a weird glitch, until it slowly starts becoming true. Added Nov 2013 13 parts 29,433 words 33,074 views 4.7 stars (23 votes)
• Secret Santa by BRK  CockUp Cock XAbs XArms XLeg XLimb 3Legs Rep MuscUp Musc NoShirts Inc Bro Xmas Series  Joe’s crew at his new firehouse are destined to become very important to him, but the extent to which he’s more and more heart-thuddingly attracted to his handsome, well-muscled workmates worries him more than a little. Added Dec 2016 3 parts 15,182 words 12,215 views 5.0 stars (12 votes)
• 17 inches by Unknown  Cock Inc Bro   Added Mar 2009 3,639 words 81,083 views 4.4 stars (19 votes)
• The shirtless club by BRK  Cock Musc NoShirts Inc Bro Twins  A cute, well-built teenager and his twin friends make a pact to keep their shirts off at all costs. Added Jul 1997 Updated Jul 2010 2 parts 7,620 words 34,342 views 4.6 stars (13 votes)
• Sizemorph by ChangeRedhawk  MuscUp Musc Inc Bro   Added Mar 2003 1,235 words 15,904 views
• The smuggler by BRK  Cock HyCum Scent Inc Bro Twins Fant Series  Ardin is one of the best smugglers in the Seven Realms, and the heist he has planned to steal a valuable heirloom from the unsuspecting (and impossibly handsome) Prince of Kossh should be a piece of cake. What he’s not counting on is finding something else in the Prince’s treasure-room: an artifact evoking a mythical cock-themed beast that brings with it a sexual need so intense Ardin is unsure it can ever be quenched. Added Apr 2021 2 parts 6,395 words 1,800 views

• Ten ways to get big and strong by BRK  CockUp Cock MuscUp Musc SizeUp Inc Bro  Cam and his band-geek buddies have a good laugh at a silly new poster in the gym listing ten ways to get big and strong, but when they sneak in after school and start writing in their own suggestions, things start to get a little weird. Added Jun 2016 Updated Sep 2016 4 parts 13,105 words 21,788 views 4.7 stars (18 votes)
• They came from outer space by WordShop  CockUp Balls Cock MuscUp Musc Hairier Plants Inc Bro  Playing with meteors can have strange side effects. Two young brothers living near a military base find themselves changing from exposure to meteorite dust. Added Oct 2017 Updated Nov 2017 4 parts 12,642 words 18,610 views 4.9 stars (20 votes)
• Three-legged bros by BRK  XAbs XCock XLeg XLimb 3Legs Inc Bro  Matteo’s stream-of-consciousness account of how, basically, the only thing hotter than having three legs is having an insanely hot brother with three legs. Added May 2020 3,562 words 2,211 views 4.8 stars (5 votes)
• To a tee by Cris Kane  CockUp Cock MuscUp Musc Tf Taller Inc Bro  Teddy is amazed to see how much his older brother has grown since going away to college. Added Dec 2019 2,189 words 6,873 views
• Touch by BRK  Cock Mental Musc NoShirts Inc Bro  Kevin goes to college where his gift for making guys he likes willing to casually touch him seems to intensify just as he’s moving in with his hunky older brother. Added Mar 2019 Updated Aug 2019 5 parts 31,177 words 17,467 views 4.8 stars (33 votes)
• Twin studs by Anonymous  Cock XCock XArms XLimb AgeDiff Virgin Inc Bro Dad Twins   Added Jul 2014 3 parts 42,539 words 11,940 views 4.0 stars (21 votes)
• Two brothers by Richard Jasper  MuscUp Musc Grad Inc Bro  Will and Chris are brothers, four years and one week apart. They’ve always been close but then Will persuades his parents to buy him a weight set and their true love—muscle—is unleashed! This story has two endings, “No, They Don’t” and “Yes, They Do” (make of that what you will!). Added Oct 2020 7 parts 7,269 words 3,126 views

• An unexpected inflation by UberPump  CockUp Pumping Cockfuck Balls Cock HyCock CumInf HyCum 2Gay Immob MuscUp Infl App Inc Bro Bi Nonc  A college athlete named Keith and his friends discover what it feels like to enlarge their cock and balls with the mysterious device Keith ordered off the dark web. When things go awry, however, their packages get huge. Keith and his friends go on a massive journey of cock growth, bloated balls, and near exploding junk as they inflate their man parts to their absolute limit. Added Apr 2020 Updated Apr 2021 32 parts 67,870 words 49,146 views 4.9 stars (64 votes)

• The Wizard of Hot by hyperboi  CockUp Balls Cock HyCock HyCum XCock XArms XLeg XLimb 3Legs Musc Det Giant PSD SizeUp Inc Bro Fur Fant Supn  A young man’s difficult life on a struggling Kansas farm takes a sudden turn when a cyclone appears, taking him and his brother far from home to another place altogether. Added Apr 2021 Updated Jun 2021 9 parts 37,761 words 10,485 views 4.5 stars (13 votes)
• Woody by BRK  AlwHard XCock SizeUp Inc Bro Twins  Woody’s been searching for his other half, but he doesn’t realize quite what that means, or what changes will happen when they meet. Added Aug 2013 2 parts 4,705 words 12,783 views