Your self restraint has deteriorated fast, especially with the small sensual moans the teacher keeps giving you. Her hips are wider than your shoulders, and her butt is eating your lap like snow covering a tree. Even with one hand grabbing all that ass, more is resting atop you, pushing into your stomach.
You push yourself forward, still feeling a little awkward about having sex in the classroom, but no one is looking at you two still. The teacher has devolved herself, rubbing those giant soft cheeks into and around you, trying to hit her own g-spots on your hard-on. You grab the thong she's wearing and pull, instantly freezing her as the thong rubbed her clit.
There's a loud smack echoing across the classroom as you bring your hand down on that fat ass. It's like a pair of beachballs stuck together in a cushion, mashing into each other for attention. Two feet of hips spreading into three feet of booty, then back into her stick legs from before all this started. Frankly, she looked ridiculous, and it was time to change that.
From top to bottom you do the finishing changes. Her thighs become beams meant to support that godly ass and loose any extra hair, partially for the look itself of a pear body and a little bit so that she stops walking like a new born giraffe. Those new juicy thick thighs are stuck to you as she keeps trying to bring herself off, mumbling the rest of the lesson.
A probing hand informs you that these new tree trunks are as soft as her gigo-ass. That and her legs eating your lower half up as she uses your dick like a seat. All of her new weight shakes like Jell-O as she seems to find her sweet spot, bobbing back and forth on your crouch. Her own ass is so big, it reaches the middle of her back and almost your pecs when she sits.
"You cannot climax until I do, teach." It's a little informal, but so what? She's still dry humping you, and making that beautiful booty bounce like waves. With her legs planted on the floor, she twerks on top of you, reduced to complete moaning. Even if she can't orgasm, it still seems like an all around good time for her.
Almost done, you spin her around so those big legs wrap around you and you can grab that huge ass easier. Her thighs envelope your waist, her cheeks devour your greedy hands and she's literally begging you to let her come. Looks like people can be a little self aware with this power.
You look into her distraught eyes and plant a kiss on her slim lips, or what were once slim lips. She blanks for a moment as you take the lead, and her lips go from two thin lines to blowjob cushion. Then she reciprocates, sticking her tongue out to try and get as much into you as possible.
Your left hand constantly is massaging and groping her giant bum, your right constantly slapping and stroking those buns and thighs, and your mouth being taken up by some pornographic kissing, you loose yourself for a moment. Or a minute, it's hard to tell. God she's bad at this, but the effort she's putting in is making her look more adorable than sexy, like a puppy fighting for your attention.
You're about to start giving her what she wants, breaking off the kisses. She's wide eyed and biting her lip in anticipation, bouncing on that fat ass as she tries to contain how excited she is. It's hard to tell if your thirty eight-ish teacher was always this sex crazed, but a glance at the clock informs you it's been about thirty minutes of nothing but teasing.
You go to strip her and notice that her shirt has been the same one the whole time. She still has those dinky a-cups? A white button up that had contrasted with her thong covers her barely existent chest, and is an opportunity for some more sexy shit.
You give her a small pull into a hug, resting her chest against yours as you add another wish to the pile. She constantly tries to kiss you, but her ass is too heavy to get up far enough to do it without help. Instead, she begins to kiss your chin and shoulders, still trying to get desires across.
You here her yelp slightly as two small cushions push into your chest, her shirt rising as her breasts swell. You get a good look and feel as the push against you, forming modest b-cups. but you hadn't done anything modest yet, and now was not the time for a change of heart.
At c-cups, her bra was straining. She bit her lower lip, starting to get into this. There was a snap as her bra gave way at d-cup, revealing rock hard nipples.
E-cups, one button snapped. F-cups, two more. G-cups was were the shirt gave up, the massive tits exploding atop you. They were warm, and you could hear a sloshing sound as they bounced in time with her ass cheeks. The new H-cups were pressed into you as your former teacher looked you in the eyes.
"Please fuck me, please?" Such a polite fucktoy, still begging for it. You relent, AKA you finally remember why you pulled down her pants.
With one hand you reach between those beautiful buttocks, pulling hard on the thong till it snaps. Your underwear, however, you have her gently remove. Hey, you gotta wear something after this, don't wanna look like a sex crazed idiot.
After she pulls your pants down, she leaps on to you. She might be shorter than you, but those big ol' titties and badonkadonk she outweighed you. Thank god your chair hit the back wall instead of falling over and giving you a concussion.
Looking down, her breasts stopped growing at K-cup and cover the front view. You can see her massive cheeks from any angle, bouncing up and down on your dick. It's a miracle you didn't cum instantly.
Your teacher used her breasts as a stepping stool to finally get to your mouth, kissing it again as she humped you. Her arms pull you two as close as possible, sandwiching her tits. You feel something wet leaking from her nipples as she moans, slamming her tight pussy down and your balls slapping the underside of her booty.
Finally, you give in, cumming with her. She constricts, shoving her titties into your face as you fill her up. "Keep going, keep going..."
At your own request, accidental though it may be, you don't stop cumming and she doesn't stop shuddering. Something warm and soft pushes out from underneath her massive tits. Her stomach slowly bulges out, looking almost six months pregnant before you decide enough's enough.
Through the haze of her horniness, your teacher seems to regain some of that intelligence she used to get this job. "I'm stuffed... I'm going to be a mother..."
She smiles delightedly at her stomach, stroking it. You wonder if your powers can let you shirk parental responsibilities as she reaches up, hugging you again and giggling like a schoolgirl, swaying those massive hips back and forth with your dick still held captive.