As Team RWBY entered their second semester, they got together to coordinate their class schedules to give them some time off together. One free afternoon, the team decided to get together in Vale to watch a movie. Unfortunately, the selections weren't great around that time of year, no awards season any time soon and it wasn't time for the summer blockbusters yet, so the team chose the least bad looking one. As far as they could tell, it was some sort of artsy Mistralian horror movie about a killer inflating her victims to take them out. They didn't exactly have high hopes for the movie, especially a scaredy cat like Ruby, but what was the worst that could happen.

About two hours later, the team left the cinema and had had very different experiences. Ruby hadn't exactly watched the movie, spending most of the time hiding behind her hands, only occasionally peeking through the gaps between her fingers when things seemed less scary. Blake, meanwhile, hadn't heard much of the movie, as she'd spent most of it covering both sets of ears to try and block out the popping and exploding of the killer's victims, which fortunately happened off screen. Yang just plain couldn't take the movie seriously, between laughing at the bad practical effects and the even worse CGI and mocking the half-hearted delivery of the lines whenever the victims started complaining about the pressure as they inflated. Weiss' reaction was very different from the rest of the team. She sat in silence, eyes and ears fixed on every moment of the film, as shivers ran up and down her spine and she became more and more flustered as the film went on, squirming in her seat as she started feeling warmer and warmer. As soon as the film ended, Weiss made an immediate beeline for the bathrooms. After a few minutes, Weiss was back, looking much more relaxed.

"Sorry about that, just needed to get something out of my system," Weiss said politely.

"Must've been important, you were going as red as Ruby's cloak," Yang pointed out. Weiss' eyes widened.

"I-I don't know what you mean. We should head back to Beacon," Weiss stammered, before quickly leading the team back. The rest of the team shared confused looks, but didn't want to push further at the moment.

Over the next week or so, the rest of the team could tell something was up with Weiss, but they weren't sure what, and Blake and Ruby weren't exactly eager to dig too deeply without Weiss' permission. Yang, on the other hand, was more than happy to dig in, and she was fairly sure that she knew where to dig. She knew that Weiss was spending a lot of time away from the team and a lot of time on her scroll, either in the bathroom or the dorm room, and she really didn't like people being near her when she was using her scroll. Also, all of this was happening not too long after the movie the team saw, giving Yang a hunch that it was connected to Weiss' weird behaviour. Yang was pretty sure she could find the answers on Weiss' scroll, but getting her away from it, especially when she was borderline paranoid, was not going to be an easy task. Fortunately for Yang, she was about to get some unexpected help.

One afternoon left just Weiss and Yang in the dorm room. Weiss had turned so that Yang couldn't see her scroll. Yang was certain Weiss was doing this on purpose. Yang spotted the door opening and saw Ruby carefully entering, trying to do everything with a glass of milk in one hand and a plate of cookies in the other. Yang put together a quick plan and hoped for the best.

"Hey Weiss, can you check this thing for me really quick?" she asked as she held out a Grimm Studies worksheet she was working on. It was too far for Weiss to see clearly, so Weiss put her scroll screen down on the bed and got up. It was too quick for Ruby to react, as Weiss stepped into her way. There was a low speed crash as Ruby bumped into Weiss, spilling her milk all over Weiss' jacket. Ruby was mortified, while Weiss had the look of someone who really wanted to be mad but was clearly trying to rein it in.

"Weiss, I'm so sorry, it was an accident I swear!" Ruby said quickly as she moved out of the way quick as a flash. Weiss let out an annoyed sigh, before taking a deep breath in and a slow breath out.

"You're right, it's an accident, I didn't see you either," Weiss agreed, before heading to her drawers and grabbing another jacket. "You should clean up too," Weiss added, pointing to the wet patch down the front of Ruby's black top.

"Aw beans, you're right. I'm sure JNPR will let me use their bathroom to clean up." With that, Weiss and Ruby were out of the room, and Yang had the room all to herself. More importantly, she had easy access to Weiss' scroll. Quick as she could, she leapt from her bunk and snatched up Weiss' scroll. The first thing she saw was a chat between her and some artist that Weiss was commissioning. It looked like the artist had just linked the picture they had finished. Clicking on that, Yang was greeted with what she assumed was porn art of some woman, surprisingly realistic art. The first thing she was drawn to was the massive pale belly that was almost as big as the rest of her nude body. After that, she saw more of the familiar subject, her long white hair, her icy blue eyes, the scar over her eye. Yang knew what this was, Weiss had art of herself inflated like a balloon, and judging by what Weiss was saying to the artist, she was really into this. Yang quickly switched to the internet browser and searched Weiss' history. There was the standard stuff a student would search, but there were a few unique results that caught Yang's eye that made Yang's conclusion even clearer. A trailer for the movie the team had watched, then scenes from the movie, then porn based on the movie, finally ending with plain old inflation porn. It was clear, Weiss had an inflation fetish. Yang quickly put the scroll back how she found it and got back up onto her bed to get back to look like she was studying, while really planning how to use this information to tease Weiss. As Weiss came back in a new jacket, Yang wanted to test the waters with regards to teasing.

"So, Weiss, great job with Ruby there," Yang commented, sounding innocent enough. Weiss turned and raised an eyebrow.

"What is that supposed to mean?" Weiss asked, sounding just shy of indignant.

"Oh, y'know, you were so calm and understanding. You from the first semester really would have blown up and popped," Yang said while keeping an eye on Weiss. The effect of something so innocuous was immediate, as Weiss went as red as a tomato and began to shiver slightly.

"I.. just… I need a shower," Weiss blurted out, before disappearing into the bathroom again, this time with her scroll. Yang was right, this was the perfect way to tease Weiss, and she was so incredibly easy to set off. Yang was going to figure out all sorts of fun ways to do it.

When Yang began to put Operation Weiss Teaser into full swing, she took it very seriously, taking advantage of every opportunity she had.

Team RWBY was out for a team lunch at a café in Vale, having a lovely, relaxing time, when a heavily pregnant woman walked in. The woman's shirt was tight around her round belly, so tight that her outie belly button was visible. Yang leaned over to Weiss, trying not to look like she was aiming the question specifically at her.

"So, that lady that just walked in, how long d'you guys reckon until she pops?" Yang asked, making sure to pop her P's. Yang flicked her eyes to the side and caught a brief glimpse of a glare aimed at her and Weiss' cheeks turning red. Ruby had a look to try figure it out, while Blake just shrugged.

"I don't know, a few weeks. When did you become a people watcher?" Blake asked, confused.

"Eh, don't worry about it."

A few days later, the team were studying together in their room, when suddenly, Yang pulled out a packet of balloons from under her pillow and started blowing them up, as if it was a totally normal thing to spontaneously do. The rest of the team could hear the sound of the balloons expanding. Weiss' head whipped around, her eyes focused on the balloon and her body tensing up before quickly turning back.

"Yang, if you pop those…" Blake warned.

"Relax, Blake, I'm not gonna do that to ya. I just wanted to blow up a few for some practice, since Ruby's birthday's coming up," Yang explained. Ruby let out a cheer and Weiss shot up from her seat.

"I'm going to study in the library," Weiss said quickly, gathering her things and disappearing in an instant, leaving Yang with a sense of smug self-satisfaction, Blake beginning to put the pieces together and Ruby just plain confused.

That weekend, Team RWBY were out with Team JNPR at a pizza place celebrating an assignment well done. The two teams were chatting away when Yang dragged the conversation off to the topic of how much pizza each of them could eat.

"Psh, you guys are weak. I could totally eat 3 pizzas, no sweat," Yang bragged, sneaking a peak at the increasingly red-faced Weiss.

"No way, you'd totally explode," Jaune dismissed with a wave.

"Hey, if we were talking pancakes, I'd totally beat your butt," Nora challenged, pointing a finger at Yang. "It's why Ren doesn't let me go to all you can eat pancake places anymore. I was so full and my gut was so big I could barely walk outta there last time. Seriously, I thought I was about to pop." In amongst the bragging and declarations of gastronomical feats, Ren leaned over to Weiss, whose face was had gone almost fully red.

"Are you okay? Your face is very red," he asked quietly, so the others couldn't hear. Weiss straightened up, stiff as a board.

"I-it's just warm in here, is all," Weiss weakly offered. Fortunately, Ren didn't try to push further, letting Weiss avoid the real answer. Her real answer would have included her desire to put a glyph under Yang and launch her into the stratosphere, but she knew that wasn't something one says during dinner with friends.

Things carried on like this for a while, pointing out stuff to set Weiss off, sending stuff to Weiss to set her off, talking about stuff to set Weiss off. After a while, Weiss' reactions stopped being so dramatic as she just got used to them and just saw them as something to be annoyed about. Of course, they still set Weiss off, and she was still probably one of the horniest students at Beacon Academy. To Yang, however, her reactions were so understated and, to be completely honest, boring. Yang knew that she needed something more dramatic to really get Weiss to react now, and Yang had just the plan.

One late afternoon, while Ruby and Blake were studying together and Weiss was alone in the dorm room, Yang went out to a quiet little buffet. She had swapped her normal jacket and tube top for a sleeveless flannel shirt with just her bra underneath, and it was an important part of the plan for her shirt to be buttoned up. When she entered the buffet, it was just a regular shirt that fit Yang just fine, if maybe just a touch snug around the chest. Four plates of buffet food and two hours later, it was a whole different story. Yang had stuffed herself full beyond belief and her shirt was nice and tight around her packed belly. The buttons weren't in danger of bursting just yet, but Yang knew how to fix that. One quick trip to a hardware store later and Yang was the proud owner of a high-quality bike pump. After Yang sneakily inserted the hose inside herself, she made her way back to Beacon, slowly pumping herself up. She knew she was catching some attention, but she didn't care as she walked through the streets, pumping herself bigger and bigger, feeling her belly groaning from the building pressure. Her buttons grew tighter and gaps were beginning to form between the buttons, letting her belly peek out, but Yang paced herself, didn't want the finale to start before she could show Weiss.

Not long later, Yang's belly was looking round as an overinflated ball, and feeling just as firm. Her buttons were moments from giving out. Fortunately, the one person who Yang wanted to see was just on the other side of the door. She carefully opened it and snuck in, seeing Weiss in her nightgown, laying on the bed reading. Yang sauntered up to the bed, pumping away.

"Oh Weiss!" Yang sang. Weiss looked up to respond, but Yang's bloated belly caught her tongue as she stared and went red. "I had so much to eat tonight, I don't think I've ever been so stuffed," Yang moaned as she kept pumping. "But that wasn't enough for me! All this air's making me feel so tight!" With that, the buttons burst, popping off and flying towards the dumbfounded Weiss. Yang let out a sigh of relief. "Ah, much better. Man, I really feel like a blimp," Yang added, gently rubbing her belly. "Real glad my shirt gave out finally, I reckon I was gonna pop if I went any bigger." Weiss tried to respond, but her head was a maelstrom of emotions, mostly variations of anger and arousal. Before she could say anything, Yang was heading towards her bed. "Oh, geez, I didn't know this took so much energy, I'm beat." Yang carefully made her way into bed and was out like a light, leaving Weiss horny and frustrated. Weiss, wanting to waste no time, hid under her covers and buried her hand in her aching pussy. As she furiously fingered herself, she came up with a plan to get Yang back for all the teasing and flustering.

As the rest of the week went by, Yang was positively basking in the attention her classmates were giving her. Sure, her shirts didn't fit right for a few days, and sure, the attention was mostly people being kinda weirded out, but Yang was all about it. She was also excited to see Weiss all flustered around her, especially the couple of times when Yang brushed past her, bumping her bloated belly into Weiss, or the time she tricked Weiss into touching her belly. What Yang didn't know, was that this whole time Weiss had been plotting her revenge, and her plan was all ready to spring on Yang that weekend.

"Yang, I hope you consider accepting this peace offer," Weiss concluded, having invited Yang out to a company dinner with her. Yang, having gone back down to her normal size, was very tempted accept. Weiss had mentioned that there was plenty of food and a bunch of people too polite to eat it all, Yang figured that this was either another perfect opportunity to tease and embarrass Weiss, or Weiss just trying to be nice and get her to stop. Yang nodded with a smile.

"Alright, I'm in. Tonight, was it?"

"Correct. I'll take you there," Weiss answered as Ruby was coming through the door.

"Ooh, where are you guys going?" Ruby asked excitedly. "Don't have too much fun without your BFF."

"Relax Ruby, it's just one of her stuffy business things. She probably invited me so she doesn't die of boredom," Yang said with a dismissive wave.

That evening, Weiss was leading Yang into a hotel where the dinner was meant to be. Weiss was in a nice white dress and pale blue jacket, tidy but not excessively formal. Meanwhile, Yang wore slim fitting black pants and a brown sleeveless blouse that was about as tight as could be on Yang, not just around the chest, but also around a belly that Yang planned on bloating as much as possible. When the pair got up to the private dining room, they found a room all set out for about ten guests, food included, but no guests in sight.

"Hey, Weiss, are you sure it was tonight?" Yang asked, leaning down to Weiss' ear. Weiss huffed and pulled out her scroll.

"I guess I have a call to make. Take a seat, I'll figure this out," Weiss said, sounding properly irritated to Yang. Yang shrugged and made her way to the table, pulling the solid looking seat at the head for herself and taking a seat. The moment she was seated, metal shackles came out of the thick arms and legs, locking around Yang's wrists and ankles before she could even notice. Yang tugged and kicked to no avail.

"Damnit, Weiss, what the hell?!" Yang called out, her eyes a fiery red as she tried to turn to face Weiss as Weiss sauntered around in front of her.

"You should've known this was a trap," Weiss said smugly.

"Not like you could catch me any other way," Yang bit back. Yang took a breath and her eyes went back to their normal lilac, before putting on a smile. "Y'know, this seems awfully familiar. Guess your little kink wasn't the only thing that movie gave you…" Before Yang could keep talking, Weiss grabbed some food from the table and shoved it into your mouth, covering Yang's mouth so she couldn't spit it out.

"With what I've had to put with over the last few weeks, I think it's time for you to stop talking." With that, Weiss kept on shovelling food into Yang's mouth as Yang kept chewing and swallowing to keep up. Quiet muffled moans slipped from Yang's mouth, egging Weiss on as Yang squirmed in her seat. Before the pair knew it, all the food was gone, and Yang was sporting a very full and very gravid looking belly. Yang's top had untucked itself and all the buttons over her belly had popped open as Weiss fed her. Even Yang's pants button had undone itself as her belly dwarfed the one Yang was sporting after her last stuffing and almost as big as it was after she inflated herself. Yang was still a little dazed when she saw a group of dust vials pop up in front of her. "I hope you have room for more, I wouldn't want this brand new E-Dust to go to waste, with how hard it was to get it from the company," Weiss teased.

"Hah, I can take it," Yang said, looking more confident than she sounded. Weiss grabbed a vial, held Yang's mouth open and poured it in. The effect took a moment to properly kick in, as Yang felt a strange immense pressure all over her body, but mainly focused in her stomach. Then, her belly began to inflate before her eyes. Up until now, this whole thing was actually kind of fun for Yang, but as her belly grew, it began to ache and groan. Weiss grabbed another dust vial and emptied it into Yang's mouth. The pressure in Yang's belly was incredible and more than Yang had ever felt by a long shot. Yang felt the pain of her sore stomach fuel her semblance and saw an opportunity. She flexed and pushed and broke out of her restraints like they were barely there. With a belly the size of a beach ball, Yang stood unsteadily as Weiss stared wide eyed, like a deer in headlights.

"Oh no," Weiss whimpered, almost certain of what was going to happen next. Yang grabbed Weiss with one hand and the rest of the vials with the other. She shoved them into Weiss' mouth and emptied the contents. Weiss felt the odd feeling Yang felt, and then she blew up like a balloon. Her belly pushed up her skirt as it grew and pushed Yang and her blimp-like belly away. The pair stumbled and fell to the ground as their bellies kept growing, their stomachs seeming to have adjusted slightly to what they were doing. Their bellies ached and felt so tight they could pop as they grew to incredible sizes, before their bellies ended up bigger than they were, pale masses that looked unnatural on their normally slim frames. Weiss delicately adjusted herself to cover herself up, now that her dress definitely couldn't contain or cover her belly, let alone anything below it, while Yang lay back as her belly rose into the air, yet still felt so light.

"Hey, Weiss, I think we might've gone too far. Sorry for all the teasing and stuff," a red-faced Yang said quietly. Weiss, equally red faced, nodded in agreement.

"As much as I may have enjoyed this, you're right. And I also apologise, this was the wrong thing to do." There was a quiet moment as the pair reflected on the last little while, while also coming up with the right way to say things without sounding too horny.

"So, truce? For real this time, I mean," Yang offered.

"Agreed, if it means we can do this again some time," Weiss added.

"Oh absolutely. I'm kinda getting the appeal to this," Yang said in a breathy tone, before realising something. "Uh, I think we're gonna need help getting out of here," Yang said, trying to carefully stand up. Weiss let out a sigh.

"I didn't think about that," she admitted as she pulled out her scroll. "I'll call Ruby and Blake, maybe they can help up."

One dial later, Ruby and Blake had answered.

"Are you two okay? Your aura readings are way down," Ruby asked loudly.

"Me and Weiss… did something kinda dumb," Yang said sheepishly.

"I hope you two finally have whatever this is out of your system," Blake said flatly.

"Don't worry, we learned our lesson," Weiss reassured, embarrassed to have to do this, "Now, can you help up get back to Beacon?" Blake let out a sigh.

"We'll try."

"Catch you later!"

With that, Blake and Ruby hung up, leaving the massive Yang and Weiss in the dining room.

"So… what do you think the others will think when they see us?" Yang asked, wanting to fill the silence.

A few hours later, Yang and Weiss were back in the dorm, having deflated to the point where they were able to fit through the door. They weren't small by any means, still looking like they were heavily pregnant with a few overdue. As the pair sat on Weiss' bed, they caught glimpses of Ruby and Blake sneaking glances at the pair and their bellies as they went about looking after their bloated pair.

"Reckon we could see how big they can get next time?" Yang whispered to Weiss. "Only if they want to, of course."

"We can only hope," Weiss said softly. Yang leant in for a gentle embrace and a soft kiss on Weiss' bloated belly.

"Again, I'm really sorry for all the teasing and bullying," Yang said sincerely.

"It's okay. After all, it's not as if you'll do it again," Weiss said with a knowing smile.

"It'd be kinda hypocritical, wouldn't it," Yang agreed. Any further plans weren't too important right now, they had to focus on dealing with their massive bellies until they were back to normal.

[AN: This one was a commission by someone that would like to remain anonymous. That's why there's so much teasing about bursting and stuff. It ain't really my thing, but they were understanding about it and were cool with me toning it down. So yeah. Also, that's all my commissions done, so if you want one, now's a fairly good time for it.]