Beauty and Boobsucker sat around on a bench outside the school, Beauty tapping her finger to her cheek while Boobsucker giggled after her latest... acquisitions, her chest trying to bounce inside the pink latex of her corset.

"Who should we tackle next?" Beauty idly wondered.

"I dunno..." Boobsucker giggled, taking her arms and squeezing her breasts together. "I'm, like, such a good bimbo ..."

Beauty rolled her eyes. She patted Boobsucker on the cheek. "Yes, yes, you are. Hmm." B.B stroked her chin. She snapped her fingers. "I know. Rainbow Dash. She'll probably be the hardest one, so it would be good to knock her out first..."

Rainbow Dash was taking things out from her locker in the hall, grumbling under her breath about not being able to do anything about Sunset Shimmer.

"Sassafrassen... we know she's guilty." Dash complained as she placed one book from her locker to her bag. "We saw her right in the middle of it. We should be able to just go up and have her expelled... heck, we should run her out of the school. Everyone hates her. The only reason she's voted Princess is because she threatens and bullies everyone. I doubt if she , oh, I don't know, had too many broken ribs to come that day, anyone would raise a fuss... hmm... maybe we should take matters into our own hands."

Rainbow closed her locker door, startled when she saw B.B leaning against the lockers behind it.

"Ah! Beauty, what are you doing here?" Dash asked. She squinted. Beauty had changed clothes, wearing some kind of green top which, while far more covering than any of her previous choices, still showed off quite a bit of cleavage and midriff, and a orange and yellow skirt, with a green strap around her right ankle She may have been a clone, but Dash still found it eerie to see a duplicate of Fluttershy wearing a copy of Sunset Shimmer's clothes.

"Oh, I thought I'd just stop by and see how you were doing." Beauty said, brushing a hand through her hair. "How are you doing, Rainbow Dash?"

"Good." Dash answered, getting more suspicious of Beauty with every second. "Where have you been?"

"Oh, you know." Beauty rocked her head. "Places."

"Uh-huh. Places with many friends, no doubt. Friends perfectly willing to take advantage of a busty damsel with Fluttershy's face, I bet."

"Oh, don't be like that, Rainbow Dash." Beauty said, reaching up and cupping Dash's chin. "You know ... I think I heard you say something about wanting to hurt Sunset Shimmer? Something about taking matters into your own hands."

"Yeah."

"Well... I'm afraid I just can't overlook that, Rainbow." Beauty gave her a smile. "Sunset's not so bad once you get to know her."

Dash backed away, swatting B.B's hand off her chin. "You... you traitor. You're friends with her, aren't you?"

"I don't recall ever swearing my fealty to you or your friends, so I don't really see how you can call me a traitor," Beauty replied eloquently.

"That's... surprisingly well-worded coming from someone who's supposed to be a bimbo."

"Supposed to." Beauty waved a finger. "But if you're uncomfortable with ladies talking smartly, maybe you might like my next trick better and find it more... fitting." B.B pulled up on her shirt, exposing her breasts and the milk dripping from her nipples.

"What the - get away." Rainbow Dash backed away, only for her head to stop, hitting something soft. She jumped out and looked around. "Wha - Rarity?"

"Hello, darling!" Boobsucker waved her fingers at Dash. "Why are you, like, being so resistant, Dashie? You're being, like, a total downer."

Dash braced her fists. "Nobody but Pinkie calls me Dashie." Dash turned back around and saw B.B approaching her. She backed away, only to get her lodged between Boobsucker's cleavage.

Boobsucker, having additional height to her, placed her chin down on the top of Rainbow Dash's head and wrapped her arms around Dash to hold her still. Dash grimaced and broke into a sweat.

"Relax, Rainbow Dash," Beauty said. "It should be over quickly."

B.B shoved her nipple into Rainbow's mouth, pressing Dash's head further into Boobsucker's cleavage. B.B squeezed herself hard, spurting a massive stream of milk into Rainbow's mouth.

"Mmf!" Dash groaned, trying not to swallow, but the milk went down anyway. Her eyes glazed over, their magenta color turning dull.

"Does that feel better?" B.B asked.

"Mm-hmm..." Dash groaned.

"Good."

Beauty squeezed again, sending out another helping of milk for Rainbow Dash to drink. Boobsucker could feel Dash relaxing, her muscles becoming less tense, and let go. Dash moaned and brought her hands around Beauty's boob, squeezing it and sucking it for herself.

"Good girl," Beauty complimented, running her hand through Rainbow Dash's hair. "Oh." She looked over when she heard the sounds of cloth stretching, a sound she was well acquainted with.

For whatever reason, rather than enhancing Rainbow's bust, the milk went straight to her rear and hips, her shorts ripping apart as her hips increased in volume, jutting out to the side, her legs becoming thicker and her butt growing into a round bubble shape.

"Interesting... that wasn't the effect it had last time." Beauty noted, rubbing her chin. "I'll have to talk to Discord, see if he can't make this milk behave..."

"Mmm..." Rainbow Dash moaned, continuing to suck Beauty's nipple, not caring about whatever she was murmuring about. Dash's hair grew, stretching out and spilling down and past her back, reaching just above her new bubble-butt. Dash popped her lips off, wearing a dazed expression.

"All full? All better?" Beauty asked.

"Yes..." Dash answered.

Beauty cupped Dash's chin again. "Ready to be a good little bimbo?"

"Uh-huh..." Dash nodded.

"Good. Now, you'll need a new, more appropriate name..." Beauty looked down at Rainbow's large hips. "Let's see, some nice, big hips .. how about 'Wide Load'?"

Rainbow Dash bucked, shaking back and forth to show off her newly acquired hips. Her hip smashed into the locker doors, denting them and bending them terribly out of shape. "Okay."

"Good, good. Now listen to me, Wide Load..." B.B put a hand on Wide Load's shoulder. "What you want is nothing more or less than to go out there and show off your hips to as many admirers as possible, and if you really like one or two of them, you can take them to bed where they can appreciate your hips a bit more thoroughly ... but your real focus is still on showing it off and flaunting what you've got, understand?"

Wide Load nodded. "Like, totally, babe. And by the way, like... nice rack you got there."

"I know," Beauty said with a smile, before moving aside. "Now go out there and strut your stuff."

"'Kay." Wide Load walked off, strutting and swinging her hips back and forth.

"You think it's, like, a good idea to let her go alone?" Boobsucker asked, "I, like, would still be totally lost right now if I didn't have you guiding me, Beauty."

"It'll be fine." B.B assured her with a smirk, keeping her hands on her hips. "Rainbow Dash is an independent sort, and that'll translate into Wide Load being fairly independent herself... well, for what she is. By the way..." B.B turned around, lifting one foot off the ground and putting her hands together in a submissive gesture. "Boobsucker? Could I ask you a favor?"

"Sure! What is it?" Boobsucker leaned in.

"There's going to be a few... changes around here in short order before too long." B.B said, glaring over her shoulder. "I need to know I can count on you to be behind my back when that time comes."

"Like, totally! I'm with you 100%, B.B-Bestie!" Boobsucker pulled B.B into a tight hug, and B.B got a taste of her own medicine as her face was squished into Boobsucker's boobs.

Huh. So this is what that feels like, Beauty thought, gritting her teeth as her eye was covered up by Beauty's breast. She pushed herself out, popping her head out of Boobsucker's bust. "Great. Thank you so much, Rar- Boobsucker." Beauty caught herself.

Although... I'm not quite sure she knows what she's agreeing to. B.B thought. Oh well. I'm hardly the first one in this whole scenario to leave out a few... key details.

In the cafeteria, most of the students present were enjoying their lunch, having no intentions in getting caught in any kind of fiasco or escapade today.

That changed when one of the boys noticed Rainbow Dash enter the room. "Rainbow Dash!?" He exclaimed, prompting several others to turn their heads.

Rainbow Dash was dancing her way into the cafeteria, carrying a drum in her hands which she played. She was wearing a belly dancer's outfit, with blue lace and veils covering her body, an exposed midriff bringing attention to her grown hips. She twirled, jumped, and spun around, wiggling her body around, much to the satisfaction of the boys (and some of the girls) , grins spreading across their faces. Wide Load continued dancing around, occasionally going up to a member of her audience and dancing right in front of them, letting them get a good look at her midriff.

She roved all over the cafeteria, mesmerizing several of the students with her dance.

Pinkie Pie was walking through Canterlot High. She kept zipping her head around, trying to find anything suspicious. Any sign of bimbofication magic being used, of where B.B might have gotten off to, or where Sunset Shimmer might have been or what she'd been doing.

“Pinkie Pie!”

In a cruel twist of fate given her habit of appearing out of nowhere, Pinkie Pie was startled when Sunset Shimmer popped up from nowhere. Normally, it was Pinkie Pie surprising people by appearing from thin air. Pinkie almost dropped her books, but she held them.

“Oh… hello, Sunset Shimmer.” Pinkie said. Sunset Shimmer looked different today. She looked … friendly.

Sunset put her hands together, smiling broadly. “Can I get your help with something?”

“Gee, I don't know...” Pinkie was right to be uncertain, but she didn't want to let Sunset know she was on to her. “I'm kind of busy today, Sunset…”

“Please?” Sunset Shimmer begged. “It only take a few minutes! It would put a big smile on my face if you were to help. You like making people smile, don't you, Pinkie Pie?”

“Hmm...” Pinkie was thinking about how to tactfully let Sunset Shimmer down while not upsetting her too much when something silver seemed to shine from Sunset Shimmer's pocket.

“Huh?” Pinkie grew interested, trying to get a better look at it.

“Oh, this?” Sunset pointed at her pocket. “Don't mind this old thing. It's just an old hand-me-down.” Sunset reached to push the silver object back down, but before she did, she lifted it up a bit further, letting Pinkie take another glimpse at it.

Pinkie started to feel a dazed.

“You alright, Pinkie Pie?” Sunset Shimmer asked.

“Yeah...” Pinkie shook her head. “I'm fine. You said you wanted my help with something?”

Sunset nodded. “Right this way.” Sunset beckoned Pinkie Pie to follow her. Sunset led Pinkie Pie into a locker room. Sunset bowed and let
Pinkie Pie go in first, locking the door behind them.

“Are you sure we should be in here, Sunset?” Pinkie asked. “It's kinda dark in here...”

“It's fine,” Sunset said as she adjusted the lights, illuminating some of the room while leaving other parts of it in the darkness.

“So, what did you need you help with?” Pinkie asked.

“Just sit on that bench right there,” Sunset pointed at a bench.

Pinkie Pie did as Sunset Shimmer, sitting down on the bench.

“And… maybe pull down your skirt and underwear?” Sunset Shimmer asked.

“What?” Pinkie crossed her arms. “Sunset, I'm not going to do that!”

Sunset reached towards her pocket, pulling out the silver trinket. “Oh, please?”

Pinkie's attention instantly focused on it. At least until Sunset Shimmer dropped back into her pocket, snapping Pinkie from her trance. “Huh?”

“Pinkie Pie, your skirt?”

“Oh… right, right.” Pinkie muttered, adjusting herself so she could pull her skirt down, just enough to expose her bottom.

“It's just to test an idea I had, nothing more.” Sunset Shimmer assured Pinkie Pie. “For a… product idea I had.”

“Uh-huh.” Pinkie Pie nodded, feeling woozy, but not quite sure why. Her eyes went wide and her lips tucked like she eaten a sour lemon when
something made its way into the inside of her butt.

“It's okay, it's okay.” Sunset Shimmer assured Pinkie, putting her hands on Pinkie's shoulders. “This is all natural. This is what it's supposed to do.” Sunset drew away from Pinkie.

“Sunset...” Pinkie whined as the… thing inside her butt continued to move. “I'm not sure I'm comfortable going through with this!”

“Oh, please?” Sunset Shimmer said. “It's putting such a big smile on my face! Just a little longer. Look at this smile!” Sunset pointed at her cheeks as she gave another broad smile.

Pinkie was comforted by this, but not by much. She liked to make people smile, and this was starting to feel good …

What am I thinking?

“You know, Sunset, you haven't told me what this product is supposed to do ...”

Pinkie's eyes shrunk. The thing inside her butt was pulsing, throbbing. It was then she realized … she wasn't testing a product at all! This wasn't a product. It was a masculine member, throbbing inside her butt!

“Oh my goodness!” Pinkie exclaimed as the member continued to move and bob inside her. “I'm such an idiot! You're trying to bimbofiy me like you did the others! Probably with some poor male sap you tricked into helping you!”

Sunset Shimmer's friendly grin turned haughty and smug. “Okay, you got me. And it's all thanks to the help of my little trinket here.” Sunset whipped out the silver object – a silver pocket watch. “If it weren't for this and its ability to implant suggestions into your mind, you would have never agreed to any of this.” Sunset gave the pocket watch a kiss.

“Well... I don't agree with it!” Pinkie put her hands on the bench and got ready to push herself up – and her away from this Wonderoblt. Before she could, however, the male reached his peak, orgasming into Pinkie, pouring his warm spunk all over her insides, where the heat spread throughout her body. Pinkie tensed up, looking at Sunset Shimmer in shock, surprised by how good it felt. Her eyes grew glassy and unfocused.

“Did you like that, Pinkie Pie?” Sunset Shimmer asked with half-lidded eyes and a seductive smirk.

“I… loved it,” Pinkie Pie admitted.

“Heh.” Sunset looked at her pocket watch. “Between this and my little bimbofied Wondercolt here that Beauty got for me, you'll be a bimbo in no time.”

“Oooh...” Pinkie closed her eyes as she was overwhelmed by a pleasurable, tingling sensations in her buttocks. She could feel her butt beginning to grow and fill out and spill out.

“Does that feel good, Pinkie Pie?” Sunset asked. “Does it feel good when your butt grows like that?”

Pinkie Pie nodded.

“Well, all you have to do is to keep letting this young man orgasm into you, and it'll make your butt bigger and bigger each time. Would you like that?”

Pinkie Pie nodded again.

With Pinkie Pie's consent and Sunset's 'gentle' encouragement, the guy continued pumping into Pinkie Pie. Pinkie developed a rather dopey-looking grin as she felt him slide in and out.

“Haaa...” Pinkie Pie giggled as she felt him pulse and pulse before orgasming inside her again. There was so much hot fluid flowing from him into her.

“Oooh!” Pinkie closed her eyes and clutched at the air as she felt her butt begin to grow again. It puffed up and up, quickly spilling over the edge of the bench and smothering more and more of his member. Pinkie's smile got wider, and her eyes grew even more unfocused. She wanted more of it.

And he was happy to give it to her. He removed herself from her for a brief moment, giving her a chance to breath before he plunged himself back in, learning to appreciate the added size of her bottom. Pinkie's cheeks smothered his member and squished it real hard, allowing him to reach orgasm faster than before… and allowing Pinkie Pie to suck more seed out from him.

Pinkie's butt grew again, swelling up like a balloon that was being overinflated to the point of popping under its own pressure. But Pinkie's growing butt wasn't going to pop; it was here to stay.

Pinkie knew each release was bimbofiying her. Making her a big-bottomed bimbo. Dulling her thought process, making it harder and harder for her to think about anything other than the next time she would be able to absorb some wonderful, hot seed through her butt, but she didn't care. She couldn't resist. It was so good. So very good. She wanted her butt to grow big. So, so big. It was all she wanted. It was all she cared about. She wanted to be a big-bottomed bimbo whose butt was only good for one thing – sucking up spunk.

Briefly, she wondered about the helpful male orgasming into her. How much he could take? How many times could he orgasm into her before tiring out? How much seed could she get from him?

As he went in and out, his huge, throbbing member still pulsing, Pinkie Pie's pleasured and overstimulated body began to contract around him. It was almost as though her butt was sucking his member, which, in turn, brought him to an orgasm even faster than before.
Pinkie's butt continue to grow as it was filled with seed. Each cheek spread out and over the edge of the bench like rising dough in an oven.

Pinkie's mind was barely holding together. She didn't matter. She lived, she existed only for her big butt, and her big butt existed solely for the pleasure of the boys. Just like Sunset's hypnotized male here – he didn't matter, either. He was a male bimbo, only good for giving out orgasms to reward good little girl bimbos like her.

“Mmm...” Pinkie moaned. “It tastes so good...”

Sunset raised her eyebrow. “How can you… taste it when it's...” Sunset shook her head. “Never mind. I don't want to know. I don't want to know.” This was one of those things better left as one of the many mysteries of Pinkie Pie left unexplained.

“Ooooh … ooooh …. OOOOH!” Pinkie closed her eyes and screamed as he orgasmed into her one more time. Pinkie's smile took up her entire face as she felt the sensation of spooge pouring into her butt and making it larger … and larger … and larger until both of her cheeks were the size of a basketball each.

Sunset walked up to her and tilted her chin. “How do you feel?”

“W-wonderful...” Pinkie muttered.

“Do you remember your name?”

Pinkie shook her head no. “Uh… it started with a “P,” I think...”

“Well, I know your name, and it does start with a P. It's Party Train, on account of your big caboose. Get it?”

“Mmm-hmm.” Pinkie nodded. “Party Train. And I live for to let handsome guys stick themselves inside me and spray their hot, thick nectar all over the inside of my huuuuge bottom!”

“Very good. In fact, that's… exactly what I was gonna say.” Sunset raised her brow again. “No, how did you – never mind.” Sunset shook her head. “Who's a good big-bottomed bimbo?”

Pinkie – Party Train raised her hand. “I am! I'm a good big-bottomed bimbo!”

Sunset Shimmer smiled. She looked over to her male servant and snapped her fingers. “Give it to her one more time.”

Fleetfoot did as he was told, giving Party Train – who was on the verge of an orgasm of her own – the hot, thick nectar she desired, that she craved, that she loved. As well as causing her butt to grow out just a little bit more.

Author's Notes:

Again, what am I doing with my life?

Pinkie's bimbofication scene I wrote beforehand in freewriting. It required surprisingly little change to work. Though I feel like Pinkie may have given in and went with Sunset too willingly. Granted, there's some leeway with the fact Sunset had a hypno-trinket, but it still feels a bit off.

I thought of Beauty changing her outfit just a way to show that she's evolving, growing beyond the confines of what she originally meant for, and making Sunset-inspired to show that she still associated herself with Sunset in some way ... But now that I've thought of it, a busty version of Fluttershy wearing a skimpier version of Sunset's clothes sounds pretty damn sexy.