"What in the world," Blood Moon, a six-foot-tall bat pony mare with dark red eyes, a long black tail, and a short black mane with a red strip through it, walks into the living room of her house to see Her husband Acid Flask and his brother's husband Bold Action sitting on the ground with there legs spread and there cocks rock hard. "What is happening?" Moon asks, turning to the short cyan zebra pegisus stallion standing beside her.
"We were joking about cocks and then this happened," Film explains, gesturing to his brother and husband on the ground. "They started comparing their cocks."
"Bold is gonna be bigger by at least three feet," Moon says in confusion, looking over at the much taller, much chunkier, and stronger Bold sitting in front of her husband.
"I tried to tell Acid that," Film explains before the two turn to watch on.
"I told ya you'd be smaller," Bold, a five-foot-tall orange earth pony stallion with brown hair, says smirking confidently. He looks around his four-foot-long, half a foot-thick, cock to look down at the three-foot-tall red zebra unicorn stallion in front of him.
"Comparing my size to my cock I'm technically bigger if I was the same size as you," Acid angrily argues as he points to his cock which is the same length as he is tall.
"Yes, but that isn't what we were comparing now is it?" Bold responds, raising an eyebrow at Acid. Acid pouts, crossing his arms over his chest as his cock twitch in anger. Not only had he technically lost, which he couldn't argue with, but he had teased himself hard and now was pent up from it.
"Told ya," His brother responds with a laugh as Moon rolls her eyes at the ludicrous situation.
Acid's pout fades as an idea forms in his head, slowly manifesting into a full-blown plane as a smile spreads across his face. His heart races faster in excitement as it all comes together in his head.
He relaxes his shoulder, lowers his arms to the ground, and concentrates on his horn. Lighting it up with an orange glow before the same light surrounds Bold, taking the enter group by surprise as it fades away.
"What did you do?" Bold asks, slightly angry but mostly nervous.
"What do you... ah... think?" Acid asks, moaning as his body shakes and groans. "Oh fuck..." Acid moans, arching his back in pleasure as he slowly starts to grow taller. His rump gaining more fat as his cock throbs bigger. The pair watches on as Bold starts to slowly shrink, his cock growing shorter as Acid's dick pumps taller, leaking out cum as it twitches in excitement. Acid's body fills with pleasure as his body is pushed bigger, fueled by Bold's fat and muscles. Bold watches as his fat and muscles are shrunken away and pushed into Acid, pumping him taller, his cock bigger, his muscles stronger, and his rump fatter.
Acid's body becomes less pudgy and more defined as muscle is pumped into him. His chest and back muscles grow stronger as his legs gain more strength as well. More and more muscle pumping into him, causing pleasure like never before as he grows stronger. Acid's strong butt cracks the ground as his height reaches six feet tall. His cock throbbing at a staggering seven feet with his balls swelling like balloons.
"Yes, bigger!" Acid moans as his growing butt slowly pushes him higher up into the air. It's soft but firm mass pressing into the floor. His cock pulsing bigger, and bigger in his hooves as he rubs along the thick length of the giant monster cock. Acid's heart races with excitement and power as his body grows, and grows. Expanding bigger, growing stronger, pushing him larger and closer to cumming.
Bold, now much much smaller than Acid, tries to get up, but is taken under Acid's expanding balls. Trapping him under Acid's swelling body. Acid hums as his body shoots with pleasure. His strong, fat rump expanding out, pulling under the other two, trapping them under his butt. Their bodies slowly shrinking, causing Acid's butt to grow faster, his cock to throb stronger, and his height to shoot upwards.
The group wiggles to try and escape. Bold rock hard and cumming under Acid, making his balls grow bigger. Film is also rock hard and cuming without control onto his brother's soft, squishy, and very strong butt, making it grow bigger, fatter, and stronger. Blood Moon couldn't help but worship his newfound size. The three help him grow bigger and bigger.
"Oh Fuck! Keep moving down there," Acid moans, grinding his butt into the ground while using his hooves to rub his growing cock. His horn shooting sparks up in the air as his body shivers. His head and his cock both hit the ceiling before he quickly readjusts so he doesn't instantly burst out of the house. "I need you guys to help me release this big load and your moving feels so good," Acid says as his butt starts to press against the walls, causing him to shake in pleasure as his strong butt is pressed against the walls.
Film starts thrusting his cock against his, now BIG brother's, big fat ass, pumping it bigger as Moon attempted to worship it. Squeezing his ass and grinding herself against it's soft plush. Bold helps by cuming onto Acid's cock, making it taller, and thicker. "Yes," Acid says, getting close to climaxing. His body growing bigger. His muscles growing stronger and more defined by the second. "Bigger!" He moans before biting his lower lip right as it hits him. His body tenses up as the pleasure hits its high.
"Fuck! Here it comes!" Acid moans, letting his cum spurt out into the room. Finally letting his balls release his cum. The pleasure skyrockets as his body grows in protest. His head breaks the roof of the house before his butt quickly expands out and destroys the rest of it. His butt rolling over crushing other houses, and trapping ponies under its strong, plush mass. The ponies shrink in size too, pushing his rump bigger. Stallions rub their cocks against his butt as it grows. The mares worship His rump as best as they can. His balls roll over the road as ponies run from him as he continues to cum.
His cock grows bigger, longer, thicker, and taller. It now towers way above him, raining down cum onto the city of Canterlot. His muscles nearly double in strength as he grows bigger. He grinds his massive ass into the ponies trapped under his growing butt. Feeling the many stallions cumming to his softer than any mare's butt ever could be. Pushing his rump bigger, fatter, and stronger.
He slowly expands out. Growing taller than Canterlot Castle and stronger than any stallion could ever hope to be. He lets out an earth-shattering moan as his rump easily starts to hotdog the mountain behind him. He lets go of his cock, letting it land on the ground with a big thud and still coming as he grinds against the mountain with his fat ass.
His rump pressing against the mountain as it grows, breaking off rocks as he grinds against it. His body shivers as he twirks against the mountain. His cock creating rivers of cum as it continues to grow bigger. He smiles as an idea forms in his head yet again.
He uses his magic to take all four princesses and trap them under his soft, fat, muscular butt. This causes his body to get pumped with alicorn magic, pushing him bigger like an explosion of growth. Wings appear on his back which spread instantly from the GOD like pleasure rushing through his body. His butt quickly crushes what is left of the mountain as his cock grows much, much thicker and longer. His balls grow like balloons as his butt expands out, covering up more of the land.
He moans, grinding his massive alicorn butt into the ground as he expands, growing taller and stronger. His head reaching the clouds. Pleasure fills his body as he feels every bit of his growth pumping him bigger. Ponies grinding against his butt, cock, and balls, trying to please their new king. Even the princesses are trying their best by giving up their magic to him. Pushing him to giant sizes as the only thing left in his head is "Bigger, BIGGER, BIGGER!"
Acid sighs as his growth comes to a stop. His cum finely stopping as he looks around to see and feel all the ponies worshiping him. He smiles before realizing something was wrong.
"Can't have a king without a queen," Acid says, using his magic to grab his wife Blood Moon. He lays down and places her on his big chest, using his magic to grow her to the size of a small cat to him. Her butt getting most of the attention. He teleports a cape, crown, and shoes onto him and his new queen.
"How ya like that?"
"That.. was... HOT!" Moon says, turning to look at the pillar that is his cock ascending high into the sky. "Can we do that again? but with you riding me the enter time?" Moon asks, causing Acid to chuckle.
