Father/Son

• Adventures of an Ivy League himbo by iHeywood  [  ]  This is a story all about how Liam Montgomery became the best himbo ever while a student at an Ivy League university.  •Huge Cock •Hyper Cock •Nipcocks •Hyper Cum •Nipple Emissions •Multicock •Hyper Anus •Male Pregnancy •Incest •Father/Son •Set in the Future •M/M •M/M/M  Added Jun 2022 2 parts 5,749 words 5,810 views 5.0 stars (19 votes)
• Alpha product series by Chet Boner  [  ]  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!  •Cock Growth •Huge Balls •Hyper Cum •Nipple Emissions •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Stories with Images •M/M •M/M/M  Added May 2017 Updated May 2019 19 parts 23,227 words 76,319 views 4.4 stars (42 votes)
• Another big morning by Thatbadwriter  [  ]  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…  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Muscle Growth •Muscle/Strength •Giants •Size Increase •Incest •Brothers •Father/Son •Destruction/Violence •Complete •M  Added Nov 2020 1,226 words 18,885 views
• The awakening by Johnny M  [  ]  Danny’s secret muscle-breast fantasy kink begins bleeding into the real world.  •Hyper Cum •Nipple Emissions •Muscle Breast •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •M/M •M/M/M •M/M/M/...  Added Jul 2012 10 parts 24,690 words 58,502 views 4.7 stars (19 votes)

• Bull’s strength by muscl4life  [  ]  On a quiet farm far from anywhere, an orphan named Joshua grows up so huge and strong that he’s bullied for being a freak. His aunt and uncle raise him with love and teach him to accept who he is, but Joshua yearns to be among men who don’t just accept his giant body, but love and admire his amazing size and power.  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Multi-abs •Multicock •Muscle Growth •Muscle/Strength •Muscle Worship •Transformation •Getting Taller •Plausible Size Difference •Size Increase •Age Difference •Bestiality •Incest •Father/Son •Destruction/Violence •Infectious •Flying •M/M •M/M/M •M/M/M/...  Added Jul 2018 Updated Oct 2018 28 parts 88,398 words 77,308 views 4.8 stars (39 votes)

• Chris olympus by FanTCMan  [  ]    •Cock Growth •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Hairy •Age Difference •Incest •Father/Son  Added Dec 2002 3 parts 9,167 words 36,220 views 4.5 stars (21 votes)
• The chronicles of Besar Otot by OneLuckyGuy89  [  ]  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.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Hyper Cum •Multicock •Gender Swap •Straight to Gay •Muscle Growth •Muscle/Strength •Transformation •Getting Taller •Plausible Size Difference •Size Increase •Age Progression •Getting Hairy •Age Difference •Incest •Brothers •Father/Son •Nonconsensual change •Hyper Pheromones  Added Jan 2020 Updated May 2021 8 parts 25,601 words 16,993 views
• Company guys by FanTCMan  [  ]  You can’t even imagine how excited Joey and I were, excited and scared, when Dad said he was going to give us the formula he’d been sampling. We were going to be models for what he called the Company.  •Cock Growth •Huge Cock •Other Mental Changes •Straight to Gay •Muscle Growth •Muscle/Strength •Increased Libido •Getting Hairy •Age Difference •Incest •Father/Son  Added Dec 2002 2 parts 7,919 words 33,173 views 4.6 stars (11 votes)
• The construction worker by Peterbilt  [  ]  A troubled young hardhat named Jordan is helped through a series of self-discoveries by Joe, a father-figure who comes to mean more and more to Jordan.  •Cock Growth •Huge Cock •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Father/Son  Added Sep 2015 22,148 words 24,691 views 4.8 stars (12 votes)
• The cowboy by Chance Riverwind  [  ]    •Cock Growth •Huge Cock •Muscle/Strength •Giants •Age Difference •Incest •Father/Son  Added Jul 2002 1,967 words 17,871 views 2.0 stars (5 votes)

• Daddy’s little boy by TonnyGiant  [  ]  Jimmie returns home from college for the summer to rediscover just how drawn he is to his massive, muscle bear stepfather.  •Huge Cock •Muscle Gut •Muscle/Strength •Plausible Size Difference •Age Difference •Incest •Father/Son •Dom/Sub •M/M  Added Sep 2018 Updated May 2019 2 parts 4,961 words 27,592 views 4.7 stars (11 votes)
• Dad’s gift by John Y.  [  ]  For Jeff’s 18th birthday, his dad decides to give him something special and close to his heart—a donkey dick.  •Cock Growth •Huge Cock •Age Difference •Incest •Father/Son  Added Mar 2004 4,994 words 47,886 views 4.7 stars (27 votes)
• Daemos island by Charles Westfall  [  ]  A Polish scientist and explorer, Ferdinand Rolcek, discovers a hidden island where the lost secrets of the Daemos, alien pioneers of masculine beauty and sexuality far beyond anything known to humanity, are finally revealed to him; and what he learns makes him never want to leave again. Don’t worry, he won’t be lonely.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Increased Libido •Size Increase •Age Difference •Incest •Father/Son •Twins •Destruction/Violence •M/t  Added Feb 2003 6 parts 14,639 words 28,833 views 3.2 stars (20 votes)
• Damian and the three muscleteens by hyperboi  [  ]    •Cock Growth •Huge Cock •Hyper Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Twins •Infectious  Added Dec 2012 5 parts 8,169 words 53,958 views 4.3 stars (27 votes)
• Dana gets wired by FanTCMan  [  ]    •Muscle Growth •Muscle/Strength •Voice Deepening •Incest •Father/Son  Added Jul 2002 3 parts 11,472 words 21,150 views 4.3 stars (8 votes)
• A day at the beach by Thatbadwriter  [  ]  You watch in dismay and amazement as your father, who’s gained the ability to grow himself to giant size in a freak medical accident, takes a trip to the beach with you and decides to make himself bigger than he’s ever tried to become before.  •Huge Cock •Hyper Cock •Giants •Size Increase •Age Difference •Incest •Father/Son •Destruction/Violence  Added Aug 2019 1,624 words 11,169 views 4.1 stars (16 votes)
• Days & Knights by iHeywood  [  ]  Bash wants to surprise his family by coming home from college for Thanksgiving early. But he gets a surprise himself. His dad is sucking his own massive cock.  •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Hyper Cum •Muscle Growth •Age Difference •Incest •Father/Son •Thanksgiving •M/M •M/M/M  Added Apr 2022 Updated May 2022 3 parts 9,852 words 7,487 views 4.9 stars (36 votes)
• Dickville by OneLuckyGuy89  [  ]  Rodney Finnegan and his four boys arrive in a Florida marshland town named Dickville. And it doesn’t take them long to figure out how it got that name.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Man Scent •Butt Growth •Increased Libido •Getting Handsomer •Voice Deepening •Getting Taller •Size Increase •Getting Hairy •Incest •Brothers •Father/Son •M/M •t/t  Added Apr 2022 2 parts 5,446 words 9,622 views 4.4 stars (12 votes)
• Don’t talk about me! by jewelbee  [  ]  What if one day, everything someone said about you became true? Everything someone says to your face, whether lie, sarcasm, joke, hyperbole… would change you. 18 year old campus douche Nick learns this the hard way, faced with a curse after he led on the wrong girl. How will he get rid of the curse, and more importantly… just how much will he change in the meantime?  •Public Orgasm •Straight to Gay •Belly Growth •Getting Fatter •Retcon •Suggestion •Incest •Father/Son •Nonconsensual change  Added Aug 2020 Updated Jul 2021 3 parts 4,348 words 13,759 views 4.9 stars (46 votes)

• Empire by LenZelig  [  ]  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.  •Cock Growth •Huge Cock •Self-suck •Straight to Gay •Muscle Growth •Muscle/Strength •Getting Taller •Size Increase •Age Difference •Bestiality •First Time/Virgin •Incest •Brothers •Father/Son •Twins •Bisexual •Hetero Sex •Nonconsensual change •Sex-Slave •Shared Body •Aliens •Space Travel •Witch/Warlock/Wizard •Thanksgiving •Mind Control •Complete •Series  Added Apr 2019 Updated May 2021 40 parts 365,561 words 126,292 views 3.4 stars (5 votes)
• Endmyths by Taur Reg  [  ]  Transformations spread through an entire town—but why?  •Multilimb •Age Difference •Incest •Father/Son •Centaurs •Naga •Satyrs •Shapeshifting  Added Aug 2013 12 parts 18,537 words 17,049 views 4.8 stars (6 votes)

• The formula by hyperboi  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Self-suck •Muscle Growth •Muscle/Strength •Age Difference •Incest •Brothers •Father/Son •Twins  Added Jan 2021 Updated Feb 2021 4 parts 14,631 words 22,468 views 4.9 stars (30 votes)

• His last hypnosis show by EdIam  [  ]  Paul has decided to put his long career as a hypnotist to bed… along with many of the new local men he’s meeting.  •Straight to Gay •Public Nudity •Suggestion •Age Difference •Incest •Father/Son •Sex-Slave •Hypnosis •Mind Control •M/M  Added Mar 2022 3 parts 10,928 words 2,149 views 4.2 stars (6 votes)

• Induced transformation: a brief history by BRK  [  ]  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.  •Cock Growth •Huge Cock •Hyper Cock •Hyper Cum •Replication •Muscle Growth •Age Regression •App •Retcon •Age Difference •Incest •Brothers •Father/Son •Nonconsensual change •Infectious •All Dialog •Complete •M/M •M/M/M/...  Added Jun 2020 2,248 words 10,118 views 4.9 stars (16 votes)

• Jon the growing stepdad by spacevlad  [  ]  Austin’s mother passes away, leaving behind a special gift. Austin uses this gift to give his stepdad, Jon, a new direction and motivation. Jon is eager to impress his stepson.  •Huge Cock •Muscle Growth •Muscle Gut •Muscle Worship •Man Scent •Belly Growth •Feeding •Gradual Change •Getting Taller •Plausible Size Difference •Size Increase •Suggestion •Father/Son •Dom/Sub •Humiliation •Christmas •New Year's Eve •Valentine's Day •Complete •M/M  Added Oct 2022 Updated Nov 2022 9 parts 40,005 words 15,189 views 4.5 stars (21 votes)

• Love/shift by BRK  [  ]  Maxfield has 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.  •Muscle Growth •Muscle/Strength •Always Shirtless •Man Scent •Gradual Change •Transformation •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Werebears •Supernatural •Complete •Series •M/M  Added Dec 2017 Updated Apr 2019 11 parts 68,079 words 39,997 views 4.8 stars (36 votes)
• Lust & consequences by BRK  [  ]  Hayden manages to gain an ability that turns beliefs into truth, but the knack for making things turn out the way he wants them to is a lot more elusive.  •Cock Growth •Huge Balls •Huge Cock •Wings •Hyper Strength •Getting Handsomer •Retcon •Suggestion •Age Difference •Incest •Father/Son •Flying •Complete •Medieval(ish) •M/M  Added Feb 2022 2 parts 6,212 words 6,302 views 4.9 stars (14 votes)

• Making the rules by EdIam  [  ]  Frank likes structure and rules in his home. Desmond likes corrupting families. Whatever could happen when the two meet?  •Other Mental Changes •Straight to Gay •Man Scent •Incest •Brothers •Father/Son •Humiliation •Nonconsensual change •Sex-Slave •Hyper Pheromones •Hypnosis •Mind Control •M/M •M/M/M  Added Sep 2021 2 parts 22,700 words 5,823 views
• Mass X by Max Mann  [  ]  Five short stories of men getting bigger and sexier, through the use of “Mass X”.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Increased Libido •Getting Handsomer •Getting Hairy •Age Difference •Incest •Father/Son •Christmas •New Year's Eve  Added Feb 2005 5 parts 19,019 words 42,571 views 4.7 stars (16 votes)
• Massive by Alex Rif  [  ]  James finds the superhero costume his stepson had ordered from a strange website for Halloween, and decides to try it on.  •Size Increase •Body Suit •Age Difference •Incest •Father/Son •Lycra/Spandex •Halloween •Superhero/Supervillain •Stories with Images •M/M  Added Feb 2016 2 parts 2,851 words 33,229 views 3.5 stars (15 votes)
• Matt and his dad by Meddler Incs  [  ]  When Matt comes home to visit his dad, he is forced into being part of The Crew.  •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Incest •Father/Son •Nonconsensual change •Symbiotes •Hypnosis •Series  Added Jun 2020 3,343 words 11,412 views 4.7 stars (6 votes)
• Meta massage therapy by M.M.69  [  ]  A mysterious new massage parlor opened in town, and brothers Jared and Jason have VIP passes. What makes this place so special?  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Multicock •Multihead •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Multipec •Multitorso •Replication •Straight to Gay •Hyper Muscle •Hyper Strength •Muscle Growth •Butt Growth •Getting Handsomer •Getting Taller •Plausible Size Difference •Size Increase •Retcon •Suggestion •Age Difference •Incest •Brothers •Father/Son •Dom/Sub •M/M  Added Nov 2021 Updated Jan 2022 3 parts 14,933 words 9,538 views 5.0 stars (14 votes)
• Musclove, Texas by Max Mann  [  ]  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).  •Cock Growth •Hyper Cock •Hyper Cum •Muscle Growth •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Twins •Restraints  Added Sep 2004 9 parts 26,085 words 65,832 views 4.8 stars (49 votes)
• My roommate (complete) by LenZelig  [  ]  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.”)  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Bisexual •Hetero Sex •Dom/Sub •Witch/Warlock/Wizard •Gay Pride •Mind Control •Complete •M/F •M/M •M/M/F •M/M/M •M/M/M/... •M/t •t/t  Added Jul 2002 Updated Jun 2021 29 parts 222,742 words 141,121 views 4.5 stars (24 votes)
• My son home on leave by Peterbilt  [  ]  A story of sex between a man and his adult Marine son when he is home on leave.  •Huge Cock •Muscle/Strength •Age Difference •Incest •Father/Son  Added Feb 2017 2 parts 18,403 words 15,738 views 4.7 stars (10 votes)
• My son is worried about his big cock by UnknownGentrifier  [  ]  Andy seeks his father’s advice about whether his cock really is too big, like his friends say it is.  •Huge Cock •Age Difference •Incest •Father/Son  Added Oct 2020 2,194 words 7,475 views 3.5 stars (11 votes)
• My son, the superstud by Max Mann  [  ]  Thom is shocked to hear that his son Rusty has enrolled in a muscle-growth transformation experiment—and it’s already too late to stop him.  •Cock Growth •Huge Cock •Straight to Gay •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son •M  Added Oct 2003 3,842 words 110,353 views 3.9 stars (32 votes)

• The new associate by Tym Greene  [  ]  Zhu is looking forward to his first day a new architectural firm, sure the way he grows—and makes other people grow just from being around him—will make things very interesting.  •Cock Growth •Huge Cock •Hyper Cock •Muscle Growth •Muscle/Strength •Public Nudity •Size Increase •Tongue Growth •Father/Son •Anthro/Furry •M/M •M/M/M  Added May 2015 Updated Dec 2020 3 parts 12,564 words 36,994 views
• New neighbors by BRK  [  ]  Jimmy is starting to enjoy his first summer with his newly acquired wishpower when a very sexy couple moves in next door. The only trouble is, Jimmy doesn’t immediately recognize the true nature of their relationship, and by the time he does, it’s already too late.  •Huge Cock •Multicock •Age Difference •Incest •Father/Son  Added Jan 2016 Updated Nov 2019 2 parts 11,319 words 18,022 views 4.5 stars (11 votes)
• The night shift by Dreamtransformer  [  ]    •Muscle/Strength •Age Difference •Incest •Father/Son  Added Dec 2013 1,239 words 12,635 views
• Not just imagination by DarkDjin  [  ]  Jampson’s overactive imagination starts to grow his cop dad and his friends...and somehow not only does it become real, but the men are pretty into it.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Suggestion •Age Difference •Incest •Father/Son  Added Jun 2014 Updated Jul 2014 2 parts 10,894 words 38,235 views 4.6 stars (36 votes)

• Perfectly normal by EdIam  [  ]  John is working on reality-bending science… but perhaps he should vet his employees a little more carefully.  •Always Hard •Other Mental Changes •Straight to Gay •Always Shirtless •Retcon •Incest •Brothers •Father/Son •Nonconsensual change  Added Jan 2021 8,364 words 5,945 views 4.0 stars (7 votes)
• Pool party by FanTCMan  [  ]  Two young men are nervous but excited. They’re about to show off their muscle transformation in front of all the guys at the pool!  •Muscle Growth •Muscle/Strength •Getting Handsomer •Age Difference •Incest •Father/Son •M/M/M/... •M/t •t/t  Added Dec 2002 1,575 words 18,950 views 4.7 stars (6 votes)
• The Porter Men by Inclytos  [  ]  The Porters are a family of perfect men, all uniquely perfect in their own way. It’s how it’s always been, right?  •Cock Growth •Cock Shrinking •Huge Cock •Dom to Sub •Getting Dumber •Pec Fucking •Hyper Strength •Muscle Breast •Muscle Growth •Muscle/Strength •Always Shirtless •Butt Growth •Increased Libido •Retcon •Incest •Brothers •Father/Son •Twins •Dom/Sub •Sex-Slave •M/M •M/t •t/t  Added Oct 2022 Updated Nov 2022 3 parts 8,809 words 7,104 views 4.7 stars (20 votes)

• Reality Pack by Thorn  [  ]  What happens when the program you’re working on for school has a downloadable mod? You investigate it of course!  •Cock Growth •Huge Cock •Pec Fucking •Muscle Breast •Muscle Growth •Muscle/Strength •Butt Growth •Belly Growth •Gradual Change •Getting Taller •Plausible Size Difference •Getting Hairy •App •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •M/M •M/M/M  Added Nov 2020 Updated Feb 2021 15 parts 79,094 words 42,281 views 4.9 stars (34 votes)
• The runner by LenZelig  [  ]  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.  •Huge Cock •Straight to Gay •Muscle/Strength •Suggestion •Age Difference •Incest •Brothers •Father/Son •Bisexual •Hetero Sex •Dom/Sub •Series  Added Jun 2020 8,270 words 7,503 views

• Sam and Bolt by Alakazam1988  [  ]  Sam’s father, Bolt, shares with his size-hungry son the secrets of becoming truly huge.  •Cock Growth •Huge Balls •Huge Cock •Hyper Cock •Nipcocks •Self-suck •Cum inflation •Hyper Cum •Nipple Emissions •Getting Taller •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Infectious •M •M/M •M/M/M/...  Added Sep 2016 Updated Dec 2016 11 parts 48,242 words 73,292 views 3.8 stars (52 votes)
• Sensational summer growth by OneLuckyGuy89  [  ]  Todd and Aaron return home to their hometown of Portland as changed men. Now it’s time for them to change the rest of the town.  •Cock Growth •Multicock •Straight to Gay •Muscle Growth •Man Scent •Butt Growth •Getting Handsomer •Voice Deepening •Getting Taller •Getting Hairy •Age Difference •Incest •Brothers •Father/Son •M/M •M/M/M  Added Apr 2022 Updated May 2022 3 parts 8,409 words 11,085 views
• Sheepish Sean by johnnyacolin  [  ]  Shy college freshman Sean gets a growth spurt that’s alarming enough to pay a visit to the doctor.  •Cock Growth •Huge Cock •Father/Son •M  Added Nov 2021 3,030 words 5,176 views 4.5 stars (14 votes)
• Shirtbusters by TFWizard  [  ]  Jared, Lance, and Lance’s father Ben discover a way to bust out of their shirts, and they can’t get enough of it.  •Muscle Growth •Muscle/Strength •Size Increase •Age Difference •Incest •Father/Son  Added Oct 2005 2 parts 6,769 words 45,958 views 4.1 stars (14 votes)
• Spice by Mr. X and Mad Dog  [  ]  In this epic story, the transformative powers of a certain substance are tested by a couple of very horny guys.  •Cock Growth •Huge Cock •Other Mental Changes •Hyper Muscle •Hyper Strength •Muscle Growth •Muscle Theft •Muscle/Strength •Muscle Worship •Man Scent •Foot Growth •Gradual Change •Transformation •Voice Deepening •Getting Taller •Size Increase •Getting Hairy •Age Difference •Incest •Father/Son •Supernatural •Gay Pride •Alcohol  Added Oct 2009 Updated Nov 2019 50 parts 221,027 words 206,110 views 4.3 stars (58 votes)
• Spin the bottle by EdIam  [  ]  Matty lives in a pretty homophobic area with pretty homophobic friends, but maybe a magically-enhanced game of spin the bottle can help loosen them up?  •Huge Cock •Straight to Gay •Incest •Father/Son •Dom/Sub  Added Aug 2021 9,825 words 4,155 views 3.8 stars (5 votes)
• Suggestions by Jack the Mindbender  [  ]  Jack is surprised by how quickly his hot stepfather goes from a closed book to jerking off right in front of him…  •Huge Cock •Suggestion •Age Difference •Incest •Father/Son •Mind Control  Added Dec 2018 2,749 words 9,227 views 4.4 stars (10 votes)

• Toy story by LenZelig  [  ]  During a storm Bob stumbles across a strange webpage offering something called “The Ultimate Sex Machine”. Intrigued, he clicks “order”, expecting maybe a sophisticated sex toy. Instead he gets Randy, a hunk-shaped machine dedicated to ensuring that Bob experiences ultimate sexual possibilities from now on and willing to reshape reality to make it happen.  •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son •Twins •Androids/Cyborgs •Space Travel •Complete •M/M •M/M/M/... •M/t •t/t  Added Jul 2002 2 parts 6,947 words 28,203 views 5.0 stars (26 votes)
• Twin studs by Anonymous  [  ]    •Huge Cock •Multicock •Multiarm •Multilimb •Age Difference •First Time/Virgin •Incest •Brothers •Father/Son •Twins  Added Jul 2014 3 parts 42,539 words 15,758 views 4.0 stars (22 votes)

• Ultimate muscle by Ultra-Muscle  [  ]  Philip gets injected with what he wants most—something that will make him a big muscle man like his dad.  •Huge Cock •Muscle Growth •Muscle/Strength •Age Difference •Incest •Father/Son  Added Dec 2013 1,418 words 27,285 views 3.6 stars (7 votes)
• Unicorn Frappuccino: Refill by Tym Greene  [  ]  This sequel to “Unicorn Frappuccino” sees the purple-tracksuit-wearing wizard at his new job, making a delivery to a Starbucks that, four years later, still offers Unicorn Frappuccinos to their customers. And of course unicorn magic comes into play to make things a little more…flavorful.  •Transformation •Human to Animal/Anthro •Father/Son •Nonconsensual change •Anthro/Furry •Witch/Warlock/Wizard •Series  Added Jul 2021 2 parts 10,383 words 2,104 views

• Vacation by muscle.growth  [  ]  Just a simple vacation sleepover with Matt, Alan, and Alan’s dad working on something weird in his basement lab.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Age Difference •Father/Son  Added Feb 2009 1,860 words 19,750 views 4.7 stars (9 votes)
• Visiting home by Wicked  [  ]  Asher spent his entire first semester working out and gaining some serious muscle, but when he returns home for winter break, he doesn’t realize that he’ll be the one amazed by how much someone can change.  •Huge Cock •Muscle Growth •Muscle/Strength •Size Increase •Age Difference •Incest •Father/Son •Infectious  Added Jan 2016 Updated May 2016 2 parts 6,753 words 37,479 views 4.7 stars (24 votes)

• Werequeer by Pfieffer  [  ]  A dad helps his son through his first transformation into a WereQueer.  •Cock Growth •Huge Balls •Hyper Cock •Hyper Cum •Transformation •Age Difference •Incest •Father/Son  Added Apr 2004 2,426 words 29,407 views 4.9 stars (18 votes)

• Y-M-C-Gay by M.M.69  [  ]  An ordinary guy with an extraordinary ability gets the guy of his dreams.  •Always Hard •Cock Growth •Huge Balls •Huge Cock •Public Orgasm •Extra digits •Multi-abs •Multicock •Multihead •Boytaur •Four Legs •Multiarm •Multileg •Multilimb •Three Legs •Multitongue •Multitorso •Replication •Straight to Gay •Muscle Growth •Public Nudity •Getting Handsomer •Gradual Change •Getting Taller •Retcon •Suggestion •Incest •Father/Son •M/M •M/M/M  Added Nov 2021 2,646 words 6,521 views 4.7 stars (9 votes)

• The Zeke chronicles by Sean Reid Scott  [  ]  Zeke, an 18 year-old gorgeous stud, was already big before some very special visitors seem to have given him a special ability to grow and grow, bigger and bigger, stronger and stronger.  •Cock Growth •Huge Cock •Muscle Growth •Muscle/Strength •Muscle Worship •Getting Taller •Age Difference •Incest •Father/Son •Dom/Sub •M/M •M/M/M  Added Jul 2013 Updated May 2017 7 parts 27,675 words 44,681 views 4.4 stars (18 votes)