This tag describes changes that take place gradually over time, rather than all at once in a big transformation, or a series of big transformations at different times.
Age Progression; Age Regression; Ass Growth; Belly Growth; Body Parts in Strange Places; Body Suit; Breast Expansion; Detachable; Foot Growth; Gender Swap; Getting Fatter; Getting Hairy; Getting Handsomer; Hairless; Human to Animal/Anthro; Human to Body Part; Human to Inanimate; Inflation; Male Pregnancy; Race Transformation; Stretchy; Transformation.
Other Physical Changes. Top Stories: “Spice”; “Puberty is a bitch”; “The brothers”; “The salt”; “Ben’s escapades”; “Enlargement”; “The good freak”; “Skin tight”; “The Latin twins”; “Say cheese and grow”. Recently Updated: “One hot summer”; “Lockdown gym”; “Vlogger”.
81 stories found. Total word count: 1,451,718.
by Alpha Luke and the wrestling team Eric Aaldersen Balls Cock CockGr Grad HyCum HyPher HyStr Musc MuscGr Supn Luke finds another beta mate on his wrestling team and his sexual energy infects the whole team during a special match! Series Added Aug 2020 6,920 words 4,850 views 5.0 stars (10 votes) by Alpha Luke passes on the lore Eric Aaldersen Balls Cock CockGr Grad Musc MuscGr Supn Luke and Brian’s story finally reaches its climax and afterwards things get positively mystical. Series Added May 2020 4,887 words 3,038 views 5.0 stars (7 votes) by Alpha Mike and his alpha bro Eric Aaldersen Balls Bro Cock CockGr Grad Musc MuscGr Supn Meet Alpha Mike, Luke’s older brother, on the day that he discovers that his little bro is an alpha, too! Series Added Mar 2020 5,437 words 5,814 views 4.6 stars (19 votes) by Angelo and Adrian WordShop CockGr Grad HyPher Infect Musc Genius Angelo and sweet Adrian are both scarred by their pasts. Angelo has to accept change in his life, and accidentally, without intending it, Adrian is forced to accept a new life for which he is not at all prepared. MuscGr Added Oct 2017 Updated May 2018 9 parts 43,220 words 20,138 views 4.4 stars (7 votes) by Ben’s escapades Kaelan Balls Bro Cock CockGr Grad HyCock HyCum Musc MuscGr NipCum 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? Self Added Feb 2018 Updated Jun 2018 9 parts 33,606 words 42,454 views 4.7 stars (31 votes) by Best buds Richard Jasper 2Gay Cock Grad HairGr Musc John and James, one straight, one gay, are freshman roommates. They bond over bodybuilding… and succeed beyond their wildest imaginings. MuscGr Added Feb 2020 9 parts 13,438 words 7,247 views by Beta Danny’s day at the park Eric Aaldersen Balls Cock CockGr Grad HyCum HyPher HyStr Musc MuscGr Supn Danny asks Luke to do some roleplaying with him when they’re in public and it has super sexy consequences. Series Added Dec 2020 3,893 words 3,404 views 5.0 stars (9 votes) by Beta Logan and his big brother Eric Aaldersen Balls Bro Cock CockGr Grad HyCum HyPher HyStr Musc MuscGr Supn Logan has difficulty controlling himself as his older brother Brian becomes a bigger and bigger stud. Series Added Jun 2020 6,499 words 9,231 views 5.0 stars (12 votes) by A big year Dancer Cock CockGr Grad Immob Musc MuscGr PSD Andy gets a big surprise when a fortune teller tells him he will have big gains this year. SizeGr Added Mar 2018 4,317 words 16,665 views 4.3 stars (12 votes) by The body spray Coalth Cock Fur Grad HairGr Musc Bodybuilder Kevin, needing a little armpit spray, spots a strange brand of deodorant in the gym vending machine and decides to give it a try. MuscGr Added Mar 2013 6 parts 5,880 words 30,290 views 5.0 stars (5 votes) by The brothers FanTCMan AlwHard 2Gay Addict Bro Cock CockGr Grad HairGr Musc Cory Callahan and his three sibs participate in a secret program, resulting in more muscles, body hair, cock size, and horniness. MuscGr Added Mar 2003 8 parts 22,620 words 88,494 views 4.8 stars (87 votes) by C is for… King Dave 2Gay AgeShr Cock CockGr Grad Musc Owen decides to order some custom health supplements online. He never expected them to have these kinds of side effects. MuscGr Added Feb 2021 Updated Mar 2021 4 parts 8,701 words 11,345 views 4.9 stars (10 votes) by Canis drainem Ziel Grad Nonc Pals Cecil and Harvey have a plan to cut the resident bully down to size, but things quickly spiral out of control. SizeShr Added Jun 2020 Updated Nov 2020 4 parts 12,583 words 5,051 views by The clockwork dial RdyRoger Cock CockGr Grad HairGr Musc A man finds what looks like a beat-up old pocket watch, but when he gets it working again he finds its intricate dials and mechanisms are actually designed to make other guys incrementally—like his roommate Gabe, for example. MuscGr Added Apr 2012 3,603 words 19,682 views 4.7 stars (15 votes) by The cock blog TheSizeKing Balls Cock CockGr Grad HyCock HyCum Patrick was just your average 25 year old guy. He’s just got one secret: he has the world’s biggest dick, and it seems to be getting bigger. Self Added Aug 2020 Updated Oct 2020 5 parts 8,685 words 8,107 views 4.4 stars (10 votes) by Come to me Richard Jasper Grad Eric is a hot, young skimpy stud—what nowadays we'd call a twunk. Then he starts hearing a voice in his head. Eat big, lift big, get big! He follows the voice's advice—with results more spectacular than he could have imagined! MuscGr Added Apr 2020 10 parts 12,348 words 5,487 views 5.0 stars (6 votes) by Contamination RdyRoger Balls Cock CockGr Grad HairGr Infect Musc MuscGr SizeGr After his dick came in contact with an experimental substance, high schooler Vincent starts slowly getting bigger… first in his crotch and then other places, too. Thomas, a tall, handsome jock, likes teasing him about it at every opportunity. TallGr Added Jul 2019 6,135 words 13,828 views 4.4 stars (7 votes) by Cursed cocks CockTFBoi 2Gay CockShr CockGr FTM Grad Marcus is having a horny night in the dorm when an inadvertent wish by his roommate sends him on a path to a new life. MuscGr Added Aug 2020 8 parts 25,154 words 6,281 views by The fake boyfriend BRK XDig Cock CockGr Grad HyTongue Musc MuscGr PSD SizeGr Zeke must travel back to his hometown, Woody Hole, in a last-ditch effort to prove he’s gay and end the eternal matchmaking with his high-school girlfriend, Stacy. A fake boyfriend is the only way—but Zeke’s closest relationship is with a customized character from an open-sandbox simulation game, a cocky personal trainer named Troy. TallGr Added Aug 2020 4 parts 13,706 words 4,396 views 4.7 stars (7 votes) by Frank revisited Richard Jasper AgeDiff Cock CockGr Grad Musc An update to a classic anonymous story. 16-year-old Frank Wynn is stick thin until a mishap in the backyard shed douses him in every chemical known to gardening and lawn care. His resulting spectacular growth is everything he could have dreamed of! MuscGr Added Oct 2020 4,445 words 3,869 views by The good freak Also Known As AlwHard Balls Cock CockGr Grad HyCum Infect Musc MuscGr SizeGr Kevin Peters is a cheerful, very fit young man who happens to be getting bigger and hotter in every way, much to the bemusement (and secret arousal) of his doctor. Soon the guys around him are growing too, and Dr. Donaldson discovers even he’s not immune... TallGr Added Nov 2002 33 parts 33,508 words 36,393 views 4.9 stars (16 votes) by Growing relationship Alakazam1988 Balls Cock CockGr Grad HyCock Musc Shortly after finding the love of his life, Connor has these strange shivers now and then. First, he tries to deny everything, but the truth can’t hide for long. Connor’s cock grows with each shiver. Year after year after year. MuscGr Added Nov 2018 4 parts 10,893 words 12,706 views 5.0 stars (12 votes) by Hard to hide BRK Cock CockGr Grad HyCock Merg Musc MuscGr Share SizeShr SizeGr Jooyong is working his uncle’s demolition site when he encounters a man in need of protection, but it’s more complicated than your average plea for help. For one thing, the man who needs help is not an ordinary man. And the kind of help he needs is something Jooyong isn’t even a little prepared for. TallGr Added Jun 2017 Updated Jul 2019 7 parts 20,225 words 17,346 views 4.7 stars (11 votes) by Hey, buddy Dream Big Cock CockGr Giant Grad Musc MuscGr PSD Self SizeGr Ben’s high school crush, Charlie, resurfaces in his life after a mysterious incident at sea left him with a strange tattoo and a propensity for slow, inexplicable growth. Tf Added Oct 2019 Updated Aug 2020 15 parts 15,491 words 15,779 views 4.9 stars (22 votes) by Jessie’s girls Richard Jasper Grad Musc Three young men—Jessie, Henry, and Frank—have known each other since they were five years old, when their respective families each wound up moving to Magnolia Terrace at roughly the same time. Jessie was the jock, Henry was the brainiac, Frank the artsy one. This is the story of how they grew up together (and boy howdy did they grow!). MuscGr Added May 2020 7 parts 6,213 words 1,341 views by Jock bros John Perrot Balls BellyGr Cock CockGr Grad HairGr HyCock HyCum HyMusc Musc MuscGr PSD SizeGr Derek convinces his friend Matt to get ‘jocked up’. They never imagined the growth that would follow… TallGr Added Feb 2021 4,818 words 7,927 views 4.7 stars (12 votes) by John the wizard RdyRoger Balls Cock CockGr GLGr Grad HairGr HyCum Musc MuscGr SizeGr Sugg John is a wizard and likes helping out his friends—usually in ways that involve none-too-subtle increases in height, equipment size, and muscle. TallGr Added Dec 2017 Updated Sep 2019 7 parts 24,468 words 28,058 views 4.5 stars (19 votes) by Jonathan’s journey Richard Jasper Cock CockGr Grad Musc MuscGr SizeGr Join Jonathan and his best friend Todd on their four-year journey from geeky 14-year-olds to veritable mountains of mind-blowing muscle! TallGr Added May 2020 13 parts 13,301 words 3,037 views by Just a little bigger Dream Big Bi BreastGr Cock CockGr Grad Het Musc MuscGr Self TallGr Drew has two problems: he’s got a crush on his two best friends, Vic and Sarah, and he’s self-conscious about being short and skinny. He’s not prepared for the changes that develop in both departments on their fateful post-graduation trip to New York City. Tf Added Dec 2019 Updated Mar 2020 15 parts 31,368 words 18,707 views 4.6 stars (12 votes) by The Latin twins RdyRoger 2Gay Balls Bro Cock CockShr CockGr Dom Grad Musc MuscGr Race SizeShr SizeGr Sugg 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. TallGr Added Apr 2012 2 parts 7,238 words 32,797 views 4.6 stars (7 votes) by Let’s make a bet Seth Peterson BellyGr Dom Fem Grad Gut MusBr Musc MuscGr PSD My boyfriend has always had some exceptional monster pecs! And over the years, they just got bigger and bigger… and so did he! My man cannot stop growing, and I love every inch of his expanding, heaving frame! Come check out the perfect swelling journey that is my big alpha boyfriend! TallGr Added May 2019 3 parts 10,394 words 11,859 views 4.2 stars (9 votes) by Li’l Dude Richard Jasper Cock CockGr Grad Musc MuscGr SizeGr Robert is a geeky college freshman, totally smitten with his “senior buddy,” a big, built, blond, hunky California surfer dude named Chris, who dubs him “Li’l Dude.” Ridiculous muscle growth ensues (as usual!). TallGr Added May 2020 10 parts 10,503 words 2,797 views by Lockdown gym BRK AlwHard NoShirts 2Gay AgeDiff Bro Cock CockGr GLGr Grad Musc MuscGr Rep TallGr Twins 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. Worship Added Apr 2021 3,110 words 4,162 views 4.7 stars (13 votes) by The long slow road to hugeness Richard Jasper Cock CockGr Grad Musc Kevin Foxworth starts lifting at 16 with your basic Weider barbell set. Despite his best efforts, he never gains more (or less) than 10 lbs. of muscle per year. More than 20 years later, he’s still at it. Do the math! MuscGr Added Aug 2020 6 parts 6,802 words 2,118 views by A love letter Seth Peterson 2Gay BellyGr FatGr GLGr Grad PSD A slow, steady, and delicious story of love, growth, and TallGr lots of big doughy softness! Come see the progression of a boy and his one and only…from friends to lovers to something very big indeed! Added May 2020 20,430 words 2,627 views by Love/shift BRK NoShirts AgeDiff Dad Grad HairGr Musc MuscGr Scent SizeGr Supn Tf Wbear Maxfield has Series very mixed feelings about leaving the city and all his tech behind to spend the summer after graduation halfway up a mountain in the family’s backwoods cabin—just him, his dad, and a whole lot of secrets. Added Dec 2017 Updated Apr 2019 11 parts 68,079 words 31,974 views 4.8 stars (30 votes) by Make the fur fly LordTronimator AlwHard 2Animal Balls Cock CockGr Fur Grad HyCock HyCum Nonc Nude Retcon After a boy buys a custom-made fursuit based off his fursona and puts it on, his body begins to experience strange changes that only he seems to notice. Tf Added Aug 2020 Updated Feb 2021 12 parts 17,595 words 11,362 views 4.9 stars (25 votes) by Morning body BRK Cock CockGr Fly Grad Rep Self TallGr An intense capacity for imagination makes real the things others only dream of. Wings Added Nov 2003 2 parts 8,240 words 19,364 views 5.0 stars (7 votes) by Morphogenic steroids RdyRoger Balls Cock CockGr Grad HairGr Infect Musc MuscGr PSD Self SizeGr Rod’s dad is working on a new technology that makes small things bigger and big things huge, with incredible implications for food supplies and beyond—only it only lasts for five hours. Rod figures being bigger for five hours… that would be pretty awesome. TallGr Added Oct 2019 4 parts 15,297 words 14,154 views 4.2 stars (9 votes) by Muscle blind Richard Jasper 2Gay Cock Grad Musc Brandon, Ryan, Bobby, and Roger are college freshmen, sharing a suite. Roger is growing like a rocket but Bobby doesn’t seem to notice, so Brandon and Ryan devise an experiment to open Bobby’s eyes. MuscGr Added Jun 2020 2,412 words 2,447 views by The muscle machine Richard Jasper Cock CockGr Grad Musc MuscGr SizeGr When Max Hardesty returns to Emory after summer break, his freshman roommate, Ralphie Peters, is in for a TallGr big surprise! And it just keeps getting bigger! Added Aug 2020 11 parts 8,800 words 5,304 views by My big problem Richard Jasper Cock GLGr Grad HyStr Musc Austin, Arturo, Bernie and Ralphie have been friends since they were kids—and discovered that Austin had an improbably huge dick! Growing his muscles to match turns into a group effort! MuscGr Added Aug 2020 5 parts 9,214 words 3,389 views by My bodyguard Richard Jasper Cock CockGr Grad HyStr Musc “Worthless” Worthington High School sophomores Roger Jensen and Nick Delios bond when the latter saves the former’s scrawny ass from the class bully, Ralphie Peters. Their burgeoning affection and academic accomplishments are only exceeded by their ridiculous muscle growth. MuscGr Added Aug 2020 4 parts 10,166 words 2,639 views by My quarantine get in shape plan Dream Big CockGr Grad Musc MuscGr Stuck at home during the quarantine, Terry orders a used weight machine, figuring he’ll use the time to lose weight and tone up. His motivation doesn’t really hit, though, until he starts spending time with his hunky neighbor, Sebastian. Scent Added Aug 2020 Updated Oct 2020 24 parts 17,396 words 7,038 views 5.0 stars (7 votes) by Needham High Mavericks BRK XCock CockGr Grad Musc MuscGr Motivating the team has been taken up a notch. Rep Added Aug 2005 Updated Oct 2018 4 parts 14,488 words 16,018 views 5.0 stars (11 votes) by Neighbor kids Richard Jasper Grad Musc The continuing adventures of Jamie and Stevie, now living on their own. Jamie’s spectacular growth never slows down! MuscGr Added Sep 2020 3,191 words 2,848 views by The new alphas go camping Eric Aaldersen Balls CockGr Grad Musc Supn New alphas Brian, Jamie, and Jordan all enjoy fireside fucks with their lead alpha, Luke, after Luke passes on the Lore. But not before Luke and Brian bond as alphas for the first time! Series Added May 2020 5,376 words 2,172 views 5.0 stars (7 votes) by The new job hyperboi Bro Cock CockGr Grad HyCock HyMusc Musc MuscGr 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. SizeGr Added Aug 2014 8 parts 20,447 words 29,676 views 4.6 stars (34 votes) by The new model Richard Jasper Cock CockGr Grad HyStr Musc Sixty-year-old Roger Jespersen no longer believes his lifelong bodybuilding goals are achievable. On the other hand, his new therapist, Dr. Haddad, possesses unusual talents. Thanks to his efforts Roger’s inner Mass Monster is unleashed. MuscGr Added Sep 2020 4 parts 5,208 words 2,386 views by The Nubian prince Richard Jasper AgeDiff Cock Grad Musc 25-year-old Rob is 5’10” and 160 pounds of Drop Dead Gorgeous. They don’t call him “The Nubian Prince” for nothing! So why’s he hiring a personal trainer at Solstice, the hottest gay gym in town? Because he’s bored. His only requirement: He doesn’t want to get any bigger! MuscGr Added Sep 2020 5 parts 4,245 words 1,814 views by The porn star Richard Jasper Cock CockGr Grad Musc What do you do with a gigantic dick and the ability to slab on hundreds of pounds of muscle? Make movies, of course! MuscGr Added Sep 2020 3 parts 3,147 words 4,390 views by Power couple Richard Jasper Cock Grad Musc Roger and Bruce have been best friends since age 13. They go off to different high schools and Roger gets into lifting, thereby sealing their destinies. MuscGr Added Sep 2020 5 parts 6,205 words 2,648 views by Prototype FanTCMan Cock Grad HairGr Musc Rocky starts working out to distract attention from his embarrassing donkey dick, only to make himself a spectacle that way too. Once he hits college he catches the eye of student teacher Jake, who sees possibilities for Rocky... MuscGr Added Jun 2005 12 parts 15,992 words 22,446 views 4.4 stars (5 votes) by Puberty is a bitch Lover Boy 2 Cock CockGr Grad HyCock MuscGr SizeGr Added Sep 2009 11 parts 14,585 words 134,617 views 4.2 stars (26 votes) by Reality Pack Thorn AgeDiff AssGr BellyGr Bro Cock CockGr Dad Grad HairGr MusBr Musc MuscGr PSD TallGr What happens when the program you’re working on for school has a downloadable mod? You investigate it of course! Virgin Added Nov 2020 Updated Feb 2021 15 parts 79,094 words 20,027 views 5.0 stars (23 votes) by The Reflex Cris Kane AI Grad Musc James receives an unexpected gift from an old friend: the trendy new home gym called the Reflex System. MuscGr Added Mar 2020 Updated Apr 2020 5 parts 24,756 words 7,208 views 4.7 stars (7 votes) by Reset Richard Jasper 2Gay 2Straight AgeShr Grad Musc Inexplicably starting his life over again as a weedy teenager, Richard is determined to make sure things are different this time. MuscGr Added Mar 2020 9,819 words 4,861 views 4.7 stars (6 votes) by Resolution Richard Jasper Cock CockGr Grad HyCock HyStr Musc MuscGr New Years SizeGr Skimpy young Ben, stuck for Christmas in a bumfuck town on the high plains, is astounded that Max, the bartender keeping him company, is a total musclebear stud! He resolves to come back in a year a bigger and better man and with Max’s encouragement does just that. TallGr Added Sep 2020 8 parts 6,657 words 3,076 views by The salt RdyRoger Bro Cock CockGr Grad Musc MuscGr SizeGr TallGr Worship 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. Series Added Jun 2010 9 parts 35,754 words 69,314 views 4.7 stars (17 votes) by Say cheese and grow hyperboi Bro Cock CockGr Grad Musc MuscGr 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. Self Added Nov 2013 13 parts 29,433 words 32,430 views 4.7 stars (23 votes) by Scenes: muscle growth shorts Richard Jasper Cock Grad HairGr Musc Ten interrelated short stories about giant muscles, huge cocks, growth galore, and, as always, fur fur fur! MuscGr Added Oct 2020 10 parts 10,010 words 3,443 views by Senior year Richard Jasper Cock Grad Het Musc Henry is a 6’2”, 140-pound beanpole. Charles, his best friend from childhood, is a 5’11, 200-pound stud. They have MuscGr big plans for their senior year of high school! Added Oct 2020 5 parts 5,797 words 3,142 views by Skin tight Dream Big AI Balls Cock CockGr Grad HyCock HyPher HyTongue Musc MuscGr Nano PSD Self SizeGr Mark has big brains, but a big body? Not so much. So he decides to bend his gray matter toward a high-tech A.I.-assisted body suit that will help him achieve the kind of body he dreams about. TallGr Added Apr 2019 Updated Oct 2020 23 parts 37,778 words 35,522 views 4.5 stars (33 votes) by Software upgrades King Dave Cock CockGr Grad Hanukkah MuscGr Retcon SizeGr Sugg TallGr Like many people, Jacob has been working from home since Covid-19 hit in March. Now in late December, an update to the video chat software gives him and his hunky coworker a pleasant surprise. Good think he didn’t take the day off! Xmas Added Dec 2020 Updated Jan 2021 3 parts 7,945 words 6,394 views 4.9 stars (17 votes) by The source: a Henry Himura mystery Proteus Cock CockGr DumbGr Grad HairGr Musc MuscGr 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. PSD Added Aug 2013 11 parts 15,896 words 18,177 views 5.0 stars (5 votes) by Spice Mr. X AgeDiff Cock CockGr Dad Grad HairGr Musc MuscGr Scent SizeGr In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys. Worship Added Oct 2009 Updated Nov 2019 50 parts 221,027 words 177,872 views 4.5 stars (53 votes) by Strange chemistry sadmilkhotel Grad Joel sees things others can’t, that is until what he sees starts to become reality. TallGr Added Jan 2021 5,075 words 1,443 views by Summer vacation Richard Jasper Cock CockGr Grad HairGr Musc MuscGr Recent high school graduate Roger is looking forward to spending the summer—alone—at his grandparents’ lake house. He plans to eat, lift, and grow! Little did he anticipate the effect his grandfather’s special formula Vegemite would have on the process! TallGr Added Oct 2020 6 parts 8,655 words 4,610 views