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Plausible Size Difference

Stories that feature giant guys that are bigger than normal people, but still within the range of what might seem possible—in other words, upwards of eight feet tall or so, but not as tall as a house or an office building. The term carries over from macro fiction, where the tag PSD separates giants that operate among normal-sized people and can do things like bend under doorways, from Giants that range beyond that, up toward skyscraper-tall and beyond. See also Size Growth, which involves getting bigger, either a little or to an extreme, and Very Tall, for guys that are pretty much normal but are taller than usual (in the general vicinity of, say, six and a half to eight feet).

Kinds of “Plausible Size Difference” stories include:

    Other tags that also fall under the category “Size/Size Difference”: Getting Taller, Giants, Size Decrease, Size Increase.

    Stories found: 93.

    Something missing? We’re always looking to improve the way our stories are tagged. If you know of a story that should be added to this page, please go to the story page and use the tag suggestion feature—the link is directly under the list of tags.

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    Complete story list for Plausible Size Difference:

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    • The accidental wizard by nolanspice(2 parts)AgeDown MGrow Musc PSD Rep Grow Tf    Added Jan 2006  •  2.9K words
      16,598 views
    • Acclimating by Dream Big(22 parts)CGrow Demons Fant Cock Musc PSD Shift Tf  Dealing with finding yourself unwillingly summoned into a fantasy-themed world as a fearsome, horned, and hung demon is, it turns out, mostly a matter of adjusting yourself to your new situation.  Added Mar 2020  •  Updated Sep 2020  •  21.6K words
      7,141 views
    • Addiction by Hatman  Cock MGrow PSD    Added May 2010  •  1.9K words
      20,926 views
    • Aiden and Andrew by JB  Musc PSD Grow Vore  Two roommates have some fun, inside and out.  Added May 2019  •  3.4K words
      5,970 views
    • Alex and the giant by JB  Giant PSD Shr Grow  Alex finds himself irresistibly attracted to a man who can change his size at will.  Added Jan 2019  •  4.3K words
      9,171 views
    • Alt-world by BRK(2 parts)CGrow Cock HyCock XArm XLimb Musc PSD Rep Grow Twins  The alternate reality was constructed so the guys fell within broad parameters. Except they were a little skewed toward the exceptional. And something in the software seemed to like outliers...  Added Jul 2011  •  5.3K words
      24,155 views
    • Awakening by BRK  Cock XCock PSD  Life doesn't make a lot of sense, what with the normality of people that shouldn’t be normal at all, but it all starts to make more sense when Steve encounters someone who’s different in a way he never expected.  Added Oct 2003  •  2.7K words
      13,897 views
    • Away game by spacevlad(2 parts)MGrow Gut Musc PSD Grow  College freshman Adam is the smallest guy on the football team. On an away game road trip, he gets paired up to room with Wyatt, the biggest offensive lineman on the team. Adam tries to control himself as they are forced to share a bed, but Wyatt’s massive body is hard to resist.  Added Dec 2017  •  6.3K words
      18,150 views
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    • Daddy’s little boy by TonnyGiant(2 parts)AgeDiff Dom Dad Cock Gut Musc PSD  Jimmie returns home from college for the summer to rediscover just how drawn he is to his massive, muscle bear stepfather.  Added Sep 2018  •  Updated May 2019  •  5.0K words
      16,266 views
    • Damien by bulkscribe(3 parts)Belly Fat Taller MGrow PSD Grow  My roommate Damien is focussed on getting as big as he possibly can… and I find myself more than willing to help him out with that.  Added Aug 2020  •  11.4K words
      5,839 views
    • Demigod chronicles I: Herakles by aquila(2 parts)CGrow Taller Cock HyCock MGrow Musc PSD Grow  A powerlifter finally hits his goals with his trainer, only to realize that there’s something big he should know about him. It isn’t all shakes and good form that gets you to top shape… sometimes, you gotta pray.  Added Dec 2018  •  3.6K words
      5,879 views
    • Derek’s rebirth by muscl4life(3 parts)AgeDiff CGrow Giant Balls Cock HyCock Cum MGrow Musc NipCum PSD Self Grow 2Gay  An elixir from the dawn of time is turning Derek into the ultimate muscle daddy, which he demonstrates by wearing out three young admirers. Taking on a personal trainer as his acolyte, Derek prepares himself for an even more impressive Phase Two of his transformation.  Added Nov 2018  •  11.7K words
      18,537 views
    • The dildo of the demigods by SuperWaffle(2 parts)CGrow Cock HyCock MGrow Musc NipC NipCum PSD Grow  Craving a size-giving artifact, the Dildo of the Demigods, a gym teacher steals it from one of his students, little realizing he’s just as susceptible to its insane growth-lust as the one h’d taken it from.  Added Aug 2020  •  18.9K words
      4,138 views
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    • Failed revenge by GiantGuy  MGrow Musc PSD Grow    Added May 2003  •  1.9K words
      22,712 views
    • The fake boyfriend by BRK(4 parts)CGrow Dig Taller Grad Cock HyTongue MGrow Musc PSD Grow  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.  Added Aug 2020  •  13.7K words
      3,076 views
    • The fan by Also Known As  CGrow Taller Cock MGrow Musc PSD Grow  A short story about a muscle growth author who meets a fan who can fulfill his fantasies.  Added Mar 2019  •  4.2K words
      6,184 views
    • The feeding by HouseForMonsters  Belly Viol Giant MGrow Gut Musc PSD Grow  A sudden visit from a fellow fetish gainer you've met online leads to massive growth and the destruction of a city.  Added Aug 2019  •  2.4K words
      7,587 views
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    • .hack//swap by Ziel  CGrow Cock MGrow MTheft Musc PSD Shr Grow  Thomas wants to prove his wrestling skills to his best friend, but there’s one major problem. Thomas is a runt! It doesn’t matter how skillful he is if he can’t even budge his titanic pal. That’s where his latest creation comes into play. Now armed with a way to even the playing field, Thomas and his pal gear up for some friendly competition and lot more than either of them bargained for.  Added Apr 2018  •  9.0K words
      14,038 views
    • Hey, buddy by Dream Big(15 parts)CGrow Giant Grad