"I needed a place to hide and chose yours randomly"

Ms. Kibur cocks her head quizzically, taking in your state of undress with genuine bemusement. "Why on earth were you-? Actually, you know what? I don't care... I'm sure it's a convoluted and pointless story; what matters is that you're here, now, I'm not going to look a gift horse in the mouth."

Smirking Ms. Kibur gives a little twirling motion with her finger, urging you to turn around. Having spent the last few minutes with your face by her crotch, breathing in her dominant musk, you don't even think about disobeying, immediately turning your back, presenting your tight ass.

"Mmm, that's a beautiful sight. I was starting to feel so frustrated. Without a tight ass to fill, all I can manage is pitiful little spatters of cum." As she snickers, you hear the stretching of latex, followed by the clack of high heels, and finally the warmth of her wet cock pressing against your back, the teacher dangling the filled condom in front of your face. "You weren't actually impressed by this little dribble, were you?"

Ms. Kibur's hands suddenly push at your shoulders, bending you over, holding you down with one hand as you feel the condom brush over you, Ms. Kibur emptying it over your ass crack, feeling her thick, sticky cum sliding down your ass, you had to admit, you actually enjoyed the feeling of warmth as it oozed against your tight pucker. Feeling Ms. Kibur's fingers digging at your flesh, she spreads your ass cheeks, earning a small gasp from you at the feeling of cold air against your ass, your body tensing and tightening as you feel her blunt, rounded cock-head press against your ass.

Pausing as you gasp and tense, Ms. Kibur grins, kneading at your ass cheeks a little. "Such a nervous little slut. Oh!... you've never actually had a girl knocking on your back door, have you? Have you?"

"N-no Ms. Kibur."

"Mm, you're lucky then. You're not going to have to worry about all the complexities of relationships, and partners. Once I'm done with you, only one girl is ever going to bring you pleasure, you'll only ever have known that one girl can bring you pleasure, everyone else is going to be too small for you, once your ass is made to fit my cock. Won't that be nice? Knowing exactly where you belong, not having any doubts about where your slutty little ass would serve best?

Without warning, Ms. Kibur suddenly pushes forwards, eliciting a startled squeak from you as your cum-lubed pucker is **** to stretch around her smooth cock-head, your ass gripping tight behind her glans. "From now on, you're my plaything, slut. I'm going to make your ass into the perfect fuck-hole for me."

You can feel Ms. Kibur leaning forward, her cock shifting a little inside of you as her hands grip your shoulders, groaning as she suddenly thrusts, her cock jamming firmly into your ass, unable to go any further. "Mmm, such a tiny little asshole... don't worry, we're going to stretch you out until you're begging for me to go deeper, and you can barely notice any cock smaller than mine."

For the next few minutes, all that can be heard are your squeaking cries of pain, and Ms. Kibur's heavy, excited breathing, the slap, slap, slap of her hips against your ass soon joining the sounds filling the room. "Mmm... told you we were going to make you into the perfect ass for me. Isn't it a nice feeling, knowing that you've managed to become a proper cocksleeve for a girl?"

Leaning down, Ms. Kibur nibbles at your neck, panting faster as her hips slap against you harder, more urgently, giving pleased little whines. You struggle, knowing what's coming, but can't get away as Ms. Kibur clutches tighter, giving an eager moan. You can feel her massive balls rolling and lifting against your thighs, feeling a slow, lazy shrug passing down the length of her cock. As it reaches the tip, you gasp, Ms. Kibur's cum settling like a lead weight in your belly, impossibly thick and dense, sticking firmly where it's deposited. Shuddering and moaning, you feel more and more hard, slow pulses along her cock, her cum so dense and thick that it feels like her cock is pushing it into you.

Panting with the exertion of feeling your belly weighed down, you yelp as Ms. Kibur suddenly grips you tightly, pulling you back to settle into her lap as she sits back in her chair, panting with satisfaction, leaning in to nibble at your ear, one hand rubbing over your belly, now tight and rounded, but with a definite sag from the impossible weight of her cum still being **** into you by her throbbing cock. "Mmm... you look beautiful. How does it feel, being pregnant with my cum-baby?"

Before you can stammer a response, Ms. Kidur half stands, pushing you forward, leaving you to stumble off of her cock, feeling the cool air as your ass remains gaping, molded to the shape of her cock, but not a single drop of her tar-thick cum escaping. Without support, you stumble, discovering that the weight of the cum inside you has actually managed to affect your center of gravity, forcing you to take a few moments to find your balance, eventually having to settle on a sort of splay-legged waddle. Giggling at your predicament, Ms. Kidur leans forwards, patting at your belly. "Don't worry about being clumsy, you'll probably be able to give birth to my jizz after a few days, then you'll be back to normal. Until then, enjoy being able to show off what a good slut you are for me."