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ultrapump.bsky.social
Ultrapump
@ultrapump.bsky.social
2.4K followers 790 following 220 posts
no minors 🔞 Loves HUGE muscle men! I make captions for the morphs that I find! morphs on my page are by hardtrainer01! ANYTHING POSTED HERE IS NOT MINE
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ultrapump.bsky.social
Fuck yea bro look at us… fuck yea.. *FLEX GRUNT* fuck we’re so massive everyone at school is gonna be afraid of us! Fuck yea bro we need to get bigger… no end in sight! *FLEX GRUNT* fuckkk so massive just big piles of muscles! More bro heh we need so much more muscle! *FLEX*
December 10, 2025 at 8:07 AM
ultrapump.bsky.social
This is a sick playlist bro! Thanks for putting it together! Heh this one’s called “never ending growth” might be my new favorite! *FLEX* GRAHHH! Hell yea I’m pumped as fuck! *BWOMPH* eh? *BWOMPH* damn my muscles feel like they’re- *BWOMPH* growing? Never ending growth heh…
December 10, 2025 at 8:07 AM
ultrapump.bsky.social
*GRUNT PANT FLEX* fuck bro that was an insane pump… I mean shit! I’m JACKED! Heh *FLEX* damn never thought these peaks would be bigger than my head… uh… *FLEX* dude mind helping me… I’m kinda stuck in this pose I- *BWOMPH* fuck Ngh… did I just grow? *BWOMPH* fuck bro help!
December 10, 2025 at 8:06 AM
ultrapump.bsky.social
Babe! I just got back from the store we’re gonna leave to the competition soon right? Uh babe? You ready? Why does it sound like a balloon inflating in the- what the- babe? You- your muscles they’re- *BWOMPH* blowing up?! Your face you’re loving it… *BWOMPH* you’re growing fast!
December 10, 2025 at 8:06 AM
ultrapump.bsky.social
Cmon bro! I’m just tryna show you my GAINS! Heh this the last time I call okay! Check it! *FLEX* it doesn’t take much for my biceps to look flexed bro! What’s with the face? Too much? Cmon bro! You know I wanted to be a freak! Hell, I’m the biggest one here! *FLEX* I need more!
December 10, 2025 at 8:06 AM
ultrapump.bsky.social
Cmon bro this is my punishment? Heh… okay but this is nothing- ack- what the- *BWOMPH* fuck did my muscles just- *BWOMPH* grow!? What did you do to- *BWOMPH* me… my mind… all I can think of is… grow… flex… BIGGER! Goon… grow… flex… more… give me more sir I need it…
December 10, 2025 at 8:05 AM
ultrapump.bsky.social
*closes door* phew that was a workout uh- *flex* no way… this is me? After just one session with him… but now… my clothes probably won’t even fit me anymore… I’m just too big… no never too big… I need more… bigger bigger biGGER BIGGER! Where did coach go I need more…
December 10, 2025 at 8:05 AM
ultrapump.bsky.social
Fuck bro my body’s been tingling since I drank that pre workout you brought me! Like my arms… they’re burning up! Gah- ack- fuck bro what did you- *BWOMPH* my arms they’re blowing up! *BWOMPH* fuck so heavy… bro help me… this is too much… *BWOMPH* I didn’t ask for so much…
December 10, 2025 at 8:05 AM
ultrapump.bsky.social
What the- bro when you get so… tall? And uh beefy? Woah wait back up… you’re so massive I don’t want you to hurt me… you want me to become… you? Bigger? Bigger than you?! No way… how are you even that big to begin with! You were so small so weak! Now you’re towering over us!
December 10, 2025 at 8:04 AM
ultrapump.bsky.social
Cmon son BIGGER! You’ve been bullied enough! You need to be the class freak! Overpower those puny little boys! No more playing nice! FLEX GROW BIGGER! That’s it son… you’re almost ready… keep pumping those muscles till you catch everyone’s eye in the gym! No stopping! GROW MORE!
December 10, 2025 at 8:04 AM
Reposted by Ultrapump
morphsg.bsky.social
“Finally, all that work in the lab paid off! I’ve concocted the perfect mixture to produce massive gains in the blink of an eye. See this bicep? I grew to this size from a small test dose. Now to try the rest of the vial before my roommate gets home…”
December 8, 2025 at 11:00 PM
Reposted by Ultrapump
vmorphs.bsky.social
Not just the muscles, bro everything’s getting bigger ! I can't even fit in my damn boxers anymore huff..💪🍆
July 29, 2025 at 3:28 PM
Reposted by Ultrapump
oldshep.bsky.social
A comic from last year that I sketched out.

In a big, GROWING Tristan mood. (Pages 1-4)
Tristan, a muscly water deer, arrives home from a gym session. He texts on his phone: "Stream up in 5 bros. *Custom water deer emoji* *bicep emoji*" His father, meanwhile, is preparing a pot of tea. "Tristan? Is that you? How was school?" He is very excited for school. "Oh, hey, Appa. Just got back from the gym. Gonna be busy for a bit." "Ah, you must have lots of homework." He is very excited for homework. "...Yeah-- homework." "OK. OK. Go, study hard! I will bring some tea later." He is very excited for studying. "Yeah, cool, Appa. See you at dinner." Deer dad turns around to see Tristan walking away. "Dinner? No--" As Tristan climbs the stairs, his dad yells, "Tristan, did you listen to anything I say?" Tristan doesn't look back, too engrossed in his phone. "You better be playing those video game again!" Tristan walks down a hall by a family photo (back when he was much smaller, and a potted orchid. "I won't," he says back. He gets to his door. "OK, see you at dinner, Appa!" he yells. His dad curses at him. Tristan enters his room, still looking at his phone and casually tosses his gym bag to the side. He walks over to his 'gaming' rig. He sits down in his 'gaming' chair, his heavy, full bulge plops on the seat. He smiles as he puts on a pair of 'gaming' headphones. Tristan gets ready to stream, his stream is starting soon! He leans forward, confused. "This on?" "Oh, it is." He leans back in his chair, a confident smirk on his face. "What's up, bros?" Yeah... he's definitely not gaming. He takes a hand plays with the heft of his chest, teasing his captive audience. "Me? Just got back from the gym, brah. Can you tell?" As he plays with his heavy pec shelf, he notices his chat is trying to get his attention. "Oh, something wrong, chat?"
November 20, 2024 at 3:08 AM
Reposted by Ultrapump
morphsg.bsky.social
Marco was patient zero for a strange new virus. It altered his digestive system so that no matter what he ate, it converted into solid muscle. Marco had no complaints and was happy to get bigger and infect others willing to grow. As long as he remained the biggest, Marco was perfectly content! 💪
December 2, 2025 at 10:49 PM
Reposted by Ultrapump
avantaberrant.bsky.social
Comm for @actorsarecool.bsky.social

When Blake came home from college to visit his stepdad, he can't believe how much he's changed since they last seen each other 🥴

---
📚 Art Pack vol.6: bit.ly/KrArtpack
🧪 Patreon: patreon.com/avantAberrant
Digital pornographic art, an establishing scene for the sequence. Blake, a blonde, handsome college student walks into the massive, old-money-style grand foyer of his home. All over the floor and furniture are puddles and stains of old and new cum, coming from no other than his stepdad Matt; once a relatively normal guy, he's now a 3-storey tall giant, towering over Blake with a chiseled muscular body, sprinkled with a bit of body hair over his pecs and abs, a handsome domineering face, salt and pepper hair, with a thick, daddy-ish mustache and 5-o'clock shadow, and a semi-hard thick cock that's nearly the size of the living room couch, dribbling endlessly in precum, with boulder-sized balls hanging below it. Blake looks up in shock at how big Matt has gotten, and Matt simply shows off his body, flexing one of his enormous biceps, while his other hand tweaks and pinches one of his big juicy nipples. Blake exclaims in surprise, "Matt?!"; and Matt replies, "Like what you see, son? I've always seen you stealing glances at me, so I wanted to get nice and big for you." Digital pornographic art. Matt has started growing again, his head beginning to get dangerously close to the top of the slanted ceiling of the grand foyer. From this angle, you can see every bit of his perfectly sculpted upper body, from his huge heavy pecs with perky nipples, to his ripped 8-pack abs, his mountainous traps, and his god-like arms. He now has Blake in his grasp, who has now stripped fully naked, and started to grow as well, becoming nearly as tall as the second floor of the house. Matt is using him effortlessly as a fleshlight, stretching his hole taut, rounding out his stomach into a huge belly with his cum, as more cum splatters and drips onto the floor. With a stoic yet commanding expression, Matt says, "That's it.. Take daddy's cum and grow. Gonna use you to become the god I deserve to be." Digital pornographic art. As Matt continues to make his stepson grow with his cum, Blake's dick gets bigger and bigger, and he leans down to start sucking on it, using his stepson's essence to make himself grow drastically. He's quickly becoming a true giant, too big even for his massive mansion, even as he's half-crouching and leaning down, his back and shoulders are hitting the ceiling, which are quickly losing its structural integrity. Blake is in full ecstasy, toes curling and mouth drooling as he's fully in his stepdad's mercy, taking the now nearly van-sized cock from behind, making his stomach swell up so big and tight with cum, while also having his own cock, almost as big as his stepdad's was at the beginning, being sucked mercilessly by him. With pure unbridled lust he yells, "Yes, grow daddy!! I want you to be a GOD!" Digital pornographic art. In the aftermath of the growth, Matt is now a god-like giant, standing twice as tall as his now ruined mansion, with bright sunlight illuminating every perfect muscle on his body, and his literal tower-sized cock splurting thick globs of cum, flooding the spacious courtyard of his estate, and quickly spilling out to the street beyond the gate. Breathlessly sat on the ground in front of him is Blake, also a giant but only half as tall as Matt, he's now absorbed nearly all of Matt's growth-inducing cum -- with a little bit lazily dripping out of his stretched out ass --, giving him perfectly sculpturesque muscles, and a car-sized cock that's also constantly splurting thick cum. With a booming godly voice, Matt addresses his stepson and says, "Thanks, son. Just what I needed", to which Blake can only say "H-holy shit..." Far in the background, the skyline of a city can be seen; a fitting place for a new god to begin his reign...
November 25, 2025 at 2:58 PM
Reposted by Ultrapump
vmorphs.bsky.social
Never too big, right..?
November 14, 2025 at 5:26 PM
Reposted by Ultrapump
gigarex.bsky.social
Pages 1-4 of an AMAZING muscle theft comic made by the ever talented @taogebear.bsky.social, who is also an all around great human. Stay tuned for more in the future 💪😈#muscletheft #muscledrain #musclegrowth #sizekink #giant
October 11, 2023 at 4:59 PM
Reposted by Ultrapump
curlyjin.bsky.social
I love getting commissioned by @gigarex.bsky.social. A Mr Gay Olympia competition goes awry. One drained bodybuilder becomes 2, becomes 10, becomes-- well, you get the idea.
November 7, 2023 at 6:53 PM
Reposted by Ultrapump
sknxori.bsky.social
Magical growth ring 💍💪

#muscle #musclegrowth #nsfw
October 26, 2025 at 2:48 PM
Reposted by Ultrapump
bulld.bsky.social
Totally self-indulgent muscle worship 😛
October 21, 2025 at 6:25 PM
Reposted by Ultrapump
bulld.bsky.social
I'm excited to release a new short and my most developed yet... BULL'S GYM! 😤 💉 💪

Stick around for the ending 😁 #milk
October 19, 2025 at 4:23 PM
Reposted by Ultrapump
darckhumor.bsky.social
Why go for big GPA when you can just go for big

Comm for @captainphlyer.bsky.social !
July 15, 2025 at 7:28 AM
Reposted by Ultrapump
kingdomvelvet.bsky.social
After all these years, Percy has finally reached godhood!
Or at least something close to it 💙
October 2, 2025 at 2:05 PM
Reposted by Ultrapump
dumberbiggerbetter.bsky.social
'I hope those pills work, I need to be huge and- *grow immobile in a second* Huuuh... *try to open mouth* Mmmh-mh?! MMMMMMH!!! *keep growing forever*'
@maxmuscle3d.bsky.social
October 14, 2025 at 11:15 AM
Reposted by Ultrapump
maxmuscle3d.bsky.social
Pecs too big? No problem!
October 13, 2025 at 5:32 PM