"Sorry if this gets a bit boring but it's necessary to mention" Lulu said "We've got 3 different races under the same roof and we have to make certain compromises to make things work. Logistics have always been a challenge after all" She walked around a little as she talked and observed that most students were at the very least mildly intrigued.

"And what I mean is, since most of us Brobs are used to colder temperatures, the AC in school is pretty much at full blast all day during spring and summer to keep ourselves comfortable. This is no trouble for our Gullie students either, but it is a bit of an issue for the Lillies" She stopped walking and faced the class as she said that, in particular directing her gaze at the large group of Lillies that were allocated on a single desk.
"You guys have to keep warm, I cannot stress how important it is, your bodies lose heat rather quickly and unless you keep doing very intense exercise you're not going to be generating enough. It doesn't sound too good when said out loud, but it's easier for you guys to keep warm than it is to cool down Brobs suffering from heatstroke. As for how to keep warm, well, there are two ways: The simplest and most basic is to just wear warmer clothes, as for the second..."

Lulu then looked at you and Jen once more, giving the two of you a playful smirk.
"I think some already may have figured it out" She said, though most girls didn't quite catch on. Cindy and Lillian did for sure and Zuemy was already familiar with the topic.
"We can have a little bit of a symbiotic relationship with our fellow Lillies, the abundant body heat we generate is more than enough to keep them safe, comfortable and protected from the horrors of hypothermia and frostbite"

Both Zuemy and Lillian glanced at Cindy, who had both Jim and Pete sitting quite comfortably themselves on one of her mountain-sized boobs and then glanced at you, who was on Jen's. Zuemy herself chuckled while Lillian closed her eyes and shook her head, frustrated a little at her lack of development upstairs even though most of the time she much preferred her naturally bottom-heavy shape.

"Lilliputian bodies can be quite warmth-hungry so it can go in reverse too, they can help absorb excess heat when we have too much of it" Lulu added, to which several girls perked up, feeling curious about the idea. Among them, Monique wondered if that could help with the trouble that her big ass often caused when she worked out, getting too hot, sweaty and swampy.
"For this to be more effective it's best to have our bodies surround the Lillies' but remember! Consent first! Though I would say that if you find a passed out Lillie that's already getting too cold just go ahead and save them, it's better that they live to be annoyed than they die because we didn't want to get involved"

The entire class almost flinched with that sudden wave of ominousness, it didn't seem like in Lulu's character to cover such somber subjects but on the other hand, it made her message all the more impactful.

"Sorry about that, but it had to be said. Both hyper and hypothermia are no laughing matter but the former is much less likely" Lulu said, doing her best to ease back the mood.
"Now, as for what I was talking about, I think a demonstration is in order..."

"Oh no" Jen muttered under her breath.

"Here it comes" Cindy giggled and Zuemy nodded in agreement while Lillian looked as annoyed as Jen but kept quiet.

As they all expected, Lulu began to walk towards Jen, swaying her hips more than was probably necessary and the slight floor shake from her steps served to remind everyone how much heft was above those thick legs. Just as she was extending her hand and was about to ask you to volunteer, a girl raised her hand to ask a question. It was the sporty-looking blonde who was in company of a bunch of Gullie girls.

"Yes, Chelsea?" Lulu said.

"Um, Ms. McAllen, why do you keep asking the same guy for help with these class demonstrations?" She asked in a surprisingly bold move that caught even Jen and her group off-guard.

"Oh, that's simple, he's the one sitting closest to where I am" Lulu replied with a confident smirk. The sheer nonchalance and simplicity of that answer made most girls like they were in one of those anime moments where people just drop to the floor from the sheer absurdity of it all.
"Buy you raise a good point, should I ask for help from some of our other fellow Lillie students?"

"NO!" The majority of Lillies screamed collectively by pure impulse but immediately got embarrassed, realizing that everyone else around them had the exact same idea. Their reaction earned them various looks with raised eyebrows from the girls sitting around their desk.

"Well, they've spoken" Lulu chuckled, she already anticipated that kind of reaction so she wasn't even mad, in fact, she was glad since they basically gave her the green light to keep her playful antics with you, whom she found much more interesting anyway.

"I don't think they like him very much" Monique said quietly to Veronica, who nodded in agreement, feeling concerned about you.

"Um, Ms. McAllen, may... may I do the demonstration myself? Just tell me what to do" Jen asked with a bit of hesitation but she chose that bit of embarrassment and awkwardness over letting her getting her hands on you if she could help it.

"Why, yes! That's a wonderful idea. I didn't think you'd be willing" Lulu said, confusing Jen a little, who had already prepared to argue why she should be the one to do whatever she was planning to get you involved with. She took a moment to process it and then nodded a bit more enthusiastically, thanking her and then she stood up when Lulu prompted her to, beckoning to come and stand before the class.

Meanwhile, you felt like you were just an unwitting passenger amidst a trainwreck, clinging to the enormous, bouncing mass of Jen's boob when she stood up and walked a few steps, then seeing how she stood before the entire class and most girls' eyes were on you.

'Dammit' You thought with a quiet groan, seeing in the distance that even the other Lillies were looking at you.

"Jen here has already gone and kindly demonstrated one of the ways of both transporting and keeping a Lillie safe. Probably safer than my back pockets after lunch" Lulu added, eliciting some laughter from the Brob girls and shudders from the Lillies. It helped ease most people's moods except the Lillies' and yours, even Jen seemed a bit more relieved with the tension in the atmosphere going down.
"But if Blaise were feeling really cold, there's one more thing to do" Lulu said, briefly glancing at her own cleavage and then at Jen, wondering if she caught on. The little nod of acknowledgement she got in response was all the confirmation she needed.
"Go ahead then..."

"Wait, what?" You said but that was at the precise moment that Jen picked you up and raised you in the air a little. You looked down and immediately realized what Lulu was going for as you saw the fleshy canyon Jen called a cleavage. Almost immediately after, you plunged down into it as she shoved you in there, disappearing in between those massive meaty globes with way too much ease.

Fortunately for you, this situation was far from unfamiliar given the number of Brob sized women in your life but at the same time, other than maybe Dolores', Jen's were the biggest and heaviest you'd dealt with, though it still didn't compare with the much larger globes of fatty meat that were those women's asses. Most importantly, you felt quite embarrassed that Lulu had Jen do this in front of the entire class, your only consolation being that in here you couldn't see all those eyes piercing you with their gaze. Trying to make the most of it, you tried to get comfortable and let these two humongous, pale squishy mountains engulf you with their overbearing mass.

Some of the Brob girls' eyes widened in pure amazement while others looked on with envy, and some more with a certain sense of disgust. As for the Lillies, pretty much every guy's eyes widened while the girls save for a handful also looked with disdainful disgust.

"Knew he'd get lost in there"

"That's what he gets for dating a whale with cow tits"

"I'd feel bad if he didn't deserve it"

"See? That's what happens to those that sell out!"

These murmurings and more came from the Lillie girls but some more could be heard coming from the Brobs:

"Wow, poor guy"

"I mean, that does look like a convenient way to carry one's boyfriend around"

"Nah, that's WAYYYYY too much titty. He's gonna drown with all that fat"

"Yeah, I feel like it's just a fleshy cage, kinda cruel"

"You think she threatens to put him there if he doesn't obey her?"

Lulu either didn't hear these comments or didn't care, as she swiftly continued.

"This way, any Lillie like Blaise here is even safer and most importantly he's kept warm. If he were getting too cold this would be a good way to warm him back up as well. Most Lillies shouldn't have a problem with this but it's also going to depend on how well endowed each of you is" Lulu said, patting Jen's shoulder.
"In some cases, it might indeed be a bit much so you should take him out after about 5 minutes to avoid smothering issues. Maybe a bit less if you're really well endowed" She added, giving Jen another look to silently prompt her to take you out, assuming that indeed she was a bit too much for you for now at least. Just then, Cindy raised her hand.

"Yes, what is it, Cindy?" Lulu asked, wondering what she would ask at this time in particular.

"It's no problem for Blaise" She said, further throwing the redhead teacher off.

"Huh?" For the first time in a while, it was Lulu who was actually surprised. Jen instantly blushed red as a tomato and glared at Cindy, barely believing that she was outing her like this.

"What's that supposed to mean?" Lulu asked with a curious and intrigued look...