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
https://linktr.ee/musclesaber
Reposted by The Sizemologist
Does the term ‘bubble butt’ even begin to describe these two humongous, bouncing globes? Hope you enjoy this sequence!
December 6, 2025 at 11:12 PM
Does the term ‘bubble butt’ even begin to describe these two humongous, bouncing globes? Hope you enjoy this sequence!
Reposted by The Sizemologist
Want to see what a muscular bull looks like when his ass starts ballooning one day with no end in sight? Then you’re in luck! Check the replies for the next three parts of this delicious sequence 😉
December 6, 2025 at 11:12 PM
Want to see what a muscular bull looks like when his ass starts ballooning one day with no end in sight? Then you’re in luck! Check the replies for the next three parts of this delicious sequence 😉
Reposted by The Sizemologist
Which Helldiver you voting for? 💙❤️💬💦
December 6, 2025 at 8:09 PM
Which Helldiver you voting for? 💙❤️💬💦
Reposted by The Sizemologist
writing prompt: there's a magic hot tub at a resort that promises you the 'body of your dreams,' so please inform the staff if you have a size kink (or don't)
#MaleTF #AssExpansion #DickGrowth
bodybeyondstories.tumblr.com/post/8022123...
#MaleTF #AssExpansion #DickGrowth
bodybeyondstories.tumblr.com/post/8022123...
BodyBeyond Stories
A special jacuzzi with a warning at an all male resort that gives some guys the body but most importantly the bubble butt of their dreams! One young college naive new gym rat goes in with some swim...
bodybeyondstories.tumblr.com
December 6, 2025 at 7:33 PM
writing prompt: there's a magic hot tub at a resort that promises you the 'body of your dreams,' so please inform the staff if you have a size kink (or don't)
#MaleTF #AssExpansion #DickGrowth
bodybeyondstories.tumblr.com/post/8022123...
#MaleTF #AssExpansion #DickGrowth
bodybeyondstories.tumblr.com/post/8022123...
Reposted by The Sizemologist
Finished the new player model.
He feels stockier than I expected~
He feels stockier than I expected~
December 6, 2025 at 8:42 PM
Finished the new player model.
He feels stockier than I expected~
He feels stockier than I expected~
Reposted by The Sizemologist
A Happy Berry Bowl Holiday gift for @greggrth.bsky.social! Here we have farmer Greg giving Alex a good milking. I hope you like this!
December 6, 2025 at 5:39 PM
A Happy Berry Bowl Holiday gift for @greggrth.bsky.social! Here we have farmer Greg giving Alex a good milking. I hope you like this!
Reposted by The Sizemologist
Borton and his biig biiiiig BIIIIIIIG balls!!!
December 5, 2025 at 9:57 PM
Borton and his biig biiiiig BIIIIIIIG balls!!!
Reposted by The Sizemologist
Hello everyone just wanted to notify you all that I've made the decision to bring back my previous animations besides a few that could potentially break Patreon TOS
These are all the animations available, the ones excluded will be available on a bundle on my itchio store!
These are all the animations available, the ones excluded will be available on a bundle on my itchio store!
December 5, 2025 at 10:14 PM
Hello everyone just wanted to notify you all that I've made the decision to bring back my previous animations besides a few that could potentially break Patreon TOS
These are all the animations available, the ones excluded will be available on a bundle on my itchio store!
These are all the animations available, the ones excluded will be available on a bundle on my itchio store!
Reposted by The Sizemologist
Cumdump might be leaking a bit at times, but he's still the best stripey condom in the house~<3
Art by Vampzinc
Featuring Naraku
Art by Vampzinc
Featuring Naraku
December 5, 2025 at 8:18 PM
Cumdump might be leaking a bit at times, but he's still the best stripey condom in the house~<3
Art by Vampzinc
Featuring Naraku
Art by Vampzinc
Featuring Naraku
Reposted by The Sizemologist
I should try animating again... animated comic? OWO
December 5, 2025 at 8:26 PM
I should try animating again... animated comic? OWO
Reposted by The Sizemologist
Stand in the corner and think about what you've done
December 5, 2025 at 12:27 PM
Stand in the corner and think about what you've done
Reposted by The Sizemologist
If you see this, show us how you draw man tiddies ✨
December 5, 2025 at 10:08 AM
If you see this, show us how you draw man tiddies ✨
Reposted by The Sizemologist
“There you are. I see you found the milk.”
“Dude… I’m so hungry. I’ve been eating for an hour!”
“Yeah, it’ll wear off soon.”
“What’ll wear off? Did you do this to me…?”
“Sure did. You said you wanted to bulk up and I thought I’d help.”
“Fuck bro… Stuff me until the fridge is empty. I wanna be huge!”
“Dude… I’m so hungry. I’ve been eating for an hour!”
“Yeah, it’ll wear off soon.”
“What’ll wear off? Did you do this to me…?”
“Sure did. You said you wanted to bulk up and I thought I’d help.”
“Fuck bro… Stuff me until the fridge is empty. I wanna be huge!”
December 4, 2025 at 11:25 PM
“There you are. I see you found the milk.”
“Dude… I’m so hungry. I’ve been eating for an hour!”
“Yeah, it’ll wear off soon.”
“What’ll wear off? Did you do this to me…?”
“Sure did. You said you wanted to bulk up and I thought I’d help.”
“Fuck bro… Stuff me until the fridge is empty. I wanna be huge!”
“Dude… I’m so hungry. I’ve been eating for an hour!”
“Yeah, it’ll wear off soon.”
“What’ll wear off? Did you do this to me…?”
“Sure did. You said you wanted to bulk up and I thought I’d help.”
“Fuck bro… Stuff me until the fridge is empty. I wanna be huge!”
Reposted by The Sizemologist
It’s time…
Stäg was just snoozing… then he woke up to a, sudden growth surge! Huh? What happened?
I thought I make a Growth-Drive for December with my new OC.
If you wanna see him bigger, make sure to like, retweet, or maybe donate a bit for a boost?
(Donation would go to groceries this month.)
Stäg was just snoozing… then he woke up to a, sudden growth surge! Huh? What happened?
I thought I make a Growth-Drive for December with my new OC.
If you wanna see him bigger, make sure to like, retweet, or maybe donate a bit for a boost?
(Donation would go to groceries this month.)
December 4, 2025 at 3:42 PM
It’s time…
Stäg was just snoozing… then he woke up to a, sudden growth surge! Huh? What happened?
I thought I make a Growth-Drive for December with my new OC.
If you wanna see him bigger, make sure to like, retweet, or maybe donate a bit for a boost?
(Donation would go to groceries this month.)
Stäg was just snoozing… then he woke up to a, sudden growth surge! Huh? What happened?
I thought I make a Growth-Drive for December with my new OC.
If you wanna see him bigger, make sure to like, retweet, or maybe donate a bit for a boost?
(Donation would go to groceries this month.)
Reposted by The Sizemologist
Something BIG is coming~ 🐾
December 4, 2025 at 12:08 AM
Something BIG is coming~ 🐾
Reposted by The Sizemologist
When a strange contagion causes Kryptonians to swell up, these heroes must take precautions…shame they didn’t work
October 6, 2023 at 7:06 AM
When a strange contagion causes Kryptonians to swell up, these heroes must take precautions…shame they didn’t work
Reposted by The Sizemologist
It may be America's ass...but you can touch it if you ask nicely
January 11, 2024 at 10:15 PM
It may be America's ass...but you can touch it if you ask nicely
Reposted by The Sizemologist
Oh no I'm...I'm growing again, trying to hold it in but...the power is just...building and building
Dick, you need to get outside, if you get any bigger...
I'm trying...but it's taking all my concentration just trying to hold it back. My ass isn't gonna fit through the door
Dick, you need to get outside, if you get any bigger...
I'm trying...but it's taking all my concentration just trying to hold it back. My ass isn't gonna fit through the door
January 10, 2024 at 7:03 AM
Oh no I'm...I'm growing again, trying to hold it in but...the power is just...building and building
Dick, you need to get outside, if you get any bigger...
I'm trying...but it's taking all my concentration just trying to hold it back. My ass isn't gonna fit through the door
Dick, you need to get outside, if you get any bigger...
I'm trying...but it's taking all my concentration just trying to hold it back. My ass isn't gonna fit through the door
Reposted by The Sizemologist
Jeez Connor, ever since we had that mission on Venus there’s been a lot more-
Dick, the joke wasn’t funny when I heard you practicing it. Super hearing remember? Must be because we were closer to the sun, caused my Kryptonian side to…
Swell?
I guess that fits
Unlike your pants
Dick, the joke wasn’t funny when I heard you practicing it. Super hearing remember? Must be because we were closer to the sun, caused my Kryptonian side to…
Swell?
I guess that fits
Unlike your pants
February 2, 2024 at 8:55 AM
Jeez Connor, ever since we had that mission on Venus there’s been a lot more-
Dick, the joke wasn’t funny when I heard you practicing it. Super hearing remember? Must be because we were closer to the sun, caused my Kryptonian side to…
Swell?
I guess that fits
Unlike your pants
Dick, the joke wasn’t funny when I heard you practicing it. Super hearing remember? Must be because we were closer to the sun, caused my Kryptonian side to…
Swell?
I guess that fits
Unlike your pants
Reposted by The Sizemologist
Thank god you're here, I think-NGGH- Oh god, I think I got some Venom in my suit and its--UGH OOOOOHHHH, it's making me bigGEEEEERR
February 3, 2024 at 9:08 PM
Thank god you're here, I think-NGGH- Oh god, I think I got some Venom in my suit and its--UGH OOOOOHHHH, it's making me bigGEEEEERR
Reposted by The Sizemologist
"Oh yeah Dick, this feels so good, I'm so close!"
'CLOSE?' Nightwing thought, his body so full and feeling so tight with what he thought had been cum pumped into him. When Superboy had said he was pent up, he hadn't been kidding. He was a blimp and this was only his pre?!
'CLOSE?' Nightwing thought, his body so full and feeling so tight with what he thought had been cum pumped into him. When Superboy had said he was pent up, he hadn't been kidding. He was a blimp and this was only his pre?!
June 1, 2024 at 5:52 PM
"Oh yeah Dick, this feels so good, I'm so close!"
'CLOSE?' Nightwing thought, his body so full and feeling so tight with what he thought had been cum pumped into him. When Superboy had said he was pent up, he hadn't been kidding. He was a blimp and this was only his pre?!
'CLOSE?' Nightwing thought, his body so full and feeling so tight with what he thought had been cum pumped into him. When Superboy had said he was pent up, he hadn't been kidding. He was a blimp and this was only his pre?!
Reposted by The Sizemologist
Damn Dick, this ass of yours is getting insane.
Ow! Hey! Cut it out!
Bet it takes good hour for all that cake to stop jiggling.
Shut up!
Ow! Hey! Cut it out!
Bet it takes good hour for all that cake to stop jiggling.
Shut up!
October 1, 2024 at 8:59 AM
Damn Dick, this ass of yours is getting insane.
Ow! Hey! Cut it out!
Bet it takes good hour for all that cake to stop jiggling.
Shut up!
Ow! Hey! Cut it out!
Bet it takes good hour for all that cake to stop jiggling.
Shut up!
Reposted by The Sizemologist
I try and make notes of ideas that I get but can't do at the time so I can come back to them later. This one was "Invincible pizza with BJ". I'm sure it was from a post from someone else but, this is what I made from it
March 14, 2025 at 8:48 PM
I try and make notes of ideas that I get but can't do at the time so I can come back to them later. This one was "Invincible pizza with BJ". I'm sure it was from a post from someone else but, this is what I made from it
Reposted by The Sizemologist
When the former sidekick is too big for Gotham. Now he can protect the whole planet with his pecs!
Bust commission for @duketomswood.bsky.social
Bust commission for @duketomswood.bsky.social
March 25, 2025 at 9:11 PM
When the former sidekick is too big for Gotham. Now he can protect the whole planet with his pecs!
Bust commission for @duketomswood.bsky.social
Bust commission for @duketomswood.bsky.social
Reposted by The Sizemologist
It's important to have snacks when on patrol, but when someone (Jason) switches his protein bar for a blimpy bar, Nightwing soon finds that butt of his filling up the streets. Those cheeks of justice will deter any mugger
(Forgot to post this a while back)
(Forgot to post this a while back)
March 25, 2025 at 6:05 PM
It's important to have snacks when on patrol, but when someone (Jason) switches his protein bar for a blimpy bar, Nightwing soon finds that butt of his filling up the streets. Those cheeks of justice will deter any mugger
(Forgot to post this a while back)
(Forgot to post this a while back)