The Sizemologist's Avatar

The Sizemologist

@musclesaber.bsky.social

27 He/Him, Minors will be blocked. Love guys getting bigger. Writer of various growth stories. Muscle growth, gainer, hyper, macro stories incoming. https://linktr.ee/musclesaber

1,088 Followers  |  479 Following  |  944 Posts  |  Joined: 04.08.2023
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Posts by The Sizemologist (@musclesaber.bsky.social)

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Animation - Naris & Brody in the elevator

Big bodacious butt meets a big bouncy bulge in a cramped elevator, what could go wrong?

26.02.2026 22:27 β€” πŸ‘ 4419    πŸ” 1110    πŸ’¬ 101    πŸ“Œ 21
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Here's @seffmegaroo.bsky.social being so big he easily smushes an entire city under shaft! ❀️

Thank you for your help! ❀️❀️

Full quality 1080P version here: www.patreon.com/posts/143537...

Also comms open too! More info in my bio!

VA Pack: @jeremiahcole777.bsky.social
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@opennsfwsp.bsky.social

14.11.2025 01:32 β€” πŸ‘ 371    πŸ” 81    πŸ’¬ 5    πŸ“Œ 1
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Since opening a new gym, I was in need of some advertising. So I enlisted some helpful gents willing to be blown up to massive proportions to draw the crowds!

Sequence commission for @sleepsforzaweak.bsky.social staring @phantomsuperman1.bsky.social

07.03.2026 20:57 β€” πŸ‘ 167    πŸ” 35    πŸ’¬ 2    πŸ“Œ 2
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#MacroMarch Day 7: Chest! πŸ’ͺπŸ‘€

07.03.2026 20:04 β€” πŸ‘ 142    πŸ” 30    πŸ’¬ 6    πŸ“Œ 0
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Was just visiting my fave jock on my way to the blacksmith's but it seems he's not up for visitors today. Maybe someone hasn't been appreciative of the gains he's been making? Well, I'll let him cool off, and then I'll show him SOMEONE likes all the hard work he's been putting in

#Stargrew

07.03.2026 18:02 β€” πŸ‘ 145    πŸ” 28    πŸ’¬ 4    πŸ“Œ 0
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Macro gymbro Jones :3

07.03.2026 14:04 β€” πŸ‘ 159    πŸ” 32    πŸ’¬ 4    πŸ“Œ 0
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Happy friday!! Got another fun #MacroMarch art made by the awesome @gasaiv.bsky.social ✨️🎨

I was walking in the forest until i encountered a huge slime and got trapped..

Ft my slime oc Slayde.

#NudetralKnight #Sludgeslut

06.03.2026 23:20 β€” πŸ‘ 153    πŸ” 23    πŸ’¬ 2    πŸ“Œ 0
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There’s huge and then there’s absolutely, undeniably gargantuan! Those overblown cheeks each have their own zip codes… and he still wants to get bigger! Hope you all enjoy this sequence πŸ”₯

06.03.2026 23:03 β€” πŸ‘ 55    πŸ” 10    πŸ’¬ 2    πŸ“Œ 1
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All some guys want in life is to have a gigantic ass. Well, for this lucky lad here, he got his hands on an injection that will give him the ass he’s always dreamed of! Just how big will that peach get? Check the replies for the next three parts πŸ‘

06.03.2026 23:03 β€” πŸ‘ 70    πŸ” 12    πŸ’¬ 3    πŸ“Œ 0

70.5 m ✨
Boff is getting HUGE, he's already making his neighborhood look like a playground
Well, time to go bigger should we?~
β™₯️+5cm
♻️+10cm
β˜•οΈ+5M

06.03.2026 22:32 β€” πŸ‘ 312    πŸ” 113    πŸ’¬ 13    πŸ“Œ 0

After the battle, Brice and Clint decide to go somewhere more…private. Clint’s pecs are veeery full and Bruce is hungry to get some post battle refreshments. And it seems to be having an effect on his hulk cock

Commission for
@pizzaguy17.bsky.social

06.03.2026 18:30 β€” πŸ‘ 151    πŸ” 25    πŸ’¬ 1    πŸ“Œ 0
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"Fuckin' hell... not again, how am I supposed to get to work now?"

06.03.2026 18:30 β€” πŸ‘ 168    πŸ” 25    πŸ’¬ 4    πŸ“Œ 1
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#MacroMarch Day 6: Mega-Macro πŸ˜ˆπŸ‘€

Casually holding up universes, no big thing.. literally ;P

06.03.2026 18:43 β€” πŸ‘ 223    πŸ” 46    πŸ’¬ 2    πŸ“Œ 0
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the meat is growing and the milk is flowing

06.03.2026 11:45 β€” πŸ‘ 256    πŸ” 34    πŸ’¬ 8    πŸ“Œ 0

Of course, no weremouse, but plenty of size to be had😈

06.03.2026 01:04 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Aidan the mouse is growing out of control as the population of Earth try to contain and help shrink him back down, failing. He's overly stimulation and flooding the local areas.

Aidan the mouse is growing out of control as the population of Earth try to contain and help shrink him back down, failing. He's overly stimulation and flooding the local areas.

Continuing with the spirit of the month! Seems growth has gone out of control that even attempts to shrink are failing! And production is beyond even my own control πŸ’¦

Art by @seijanetroix.bsky.social who did a great job πŸ’›

#MacroMarch #HyperFur

05.03.2026 23:09 β€” πŸ‘ 118    πŸ” 27    πŸ’¬ 2    πŸ“Œ 0
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I’m giving you one of each and watching the results

06.03.2026 00:58 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
Farmer Greg is coming out of the changing room on Ginger Island when Alex comes up, blocking his path. Alex puts his hand on the wall, boxing Greg in, telling him Greg had eft something in the changing room. Greg doesn't get the hint at first, so Alex tries to insist that they go in together to look for it.

Farmer Greg is coming out of the changing room on Ginger Island when Alex comes up, blocking his path. Alex puts his hand on the wall, boxing Greg in, telling him Greg had eft something in the changing room. Greg doesn't get the hint at first, so Alex tries to insist that they go in together to look for it.

It's a rare occasion, but sometimes Farmer Greg would go to Ginger Island just to relax rather than running around searching for dragon teeth or golden walnuts. As he comes out of the changing rooms however, he gets blocked by one of the...broader villagers.... Wonder what's on his mind

#Stargrew

04.03.2026 17:12 β€” πŸ‘ 332    πŸ” 64    πŸ’¬ 3    πŸ“Œ 0
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a drawing of a person sitting on a pillow with the word psp written above them ALT: a drawing of a person sitting on a pillow with the word psp written above them

I fear the growing golden retriever giant man is my type.

04.03.2026 16:47 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Sex: I'm indifferent! If you're into it, great; if not, great!
Growth: Things like inflation, hyper, and other forms of expansion still push my buttons!
Growth during sex: Very good, something I'm certainly interested in! ^ ^πŸ’¦

Sex: I'm indifferent! If you're into it, great; if not, great! Growth: Things like inflation, hyper, and other forms of expansion still push my buttons! Growth during sex: Very good, something I'm certainly interested in! ^ ^πŸ’¦

Been meaning to make this for a while > >πŸ’¦

17.10.2023 04:25 β€” πŸ‘ 258    πŸ” 56    πŸ’¬ 6    πŸ“Œ 1
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Doom Gooner, Druth & Synth Cumflation Casual Sex animation

I discovered my synths could run Doom, naturally I stuck my dick in him and decided to game it out till I turn his abs into a cumgut~ I had no idea they could vibrate~

Watch the full animation on PATREON
Links in pinned post/bio

02.03.2026 16:59 β€” πŸ‘ 885    πŸ” 146    πŸ’¬ 18    πŸ“Œ 1

I say option 1 is good for normal conversation, but if the big guy is in need of milking or is feeling flirty, option 2 is great to show little guys β€œyou drink here”.

04.03.2026 14:20 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Comic commissions are now open!

Fill in the form below if you're interested ^_^

forms.gle/j9MD52JmYPv8...

04.03.2026 13:07 β€” πŸ‘ 58    πŸ” 15    πŸ’¬ 3    πŸ“Œ 0
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its Macro March, time to splurge on a feast!
what should i order?

I'm currently 6ft and about 300 pounds of dense ass kicking muscles

Likes = +0.5% body height
Reposts = +0.5% muscle mass

Comment what i should eat~

04.03.2026 04:54 β€” πŸ‘ 338    πŸ” 156    πŸ’¬ 32    πŸ“Œ 1

Are there any old school morphers out there that know how to make this a growth gif?

04.03.2026 06:06 β€” πŸ‘ 11    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

And big🀀

04.03.2026 02:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Gartie πŸ›‘β€οΈβ€πŸ”₯ Commission for @gale

[ #GayArt ] [ #BaraArt ] [ #FireEmblem ]

03.03.2026 21:47 β€” πŸ‘ 141    πŸ” 35    πŸ’¬ 2    πŸ“Œ 0
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Happy #macromarch! I made some silly animations for you.

There's this idea of a dedicated team monitoring kaijus every movement, setting off areas, informing the inhabitants.

Not that a simple police barrier would stop anyone from getting closer.

Do you think he'd notice you down there~?

03.03.2026 22:07 β€” πŸ‘ 714    πŸ” 156    πŸ’¬ 24    πŸ“Œ 1

Well that's a fast start~ ✨

03.03.2026 23:29 β€” πŸ‘ 344    πŸ” 111    πŸ’¬ 7    πŸ“Œ 1