She takes it slow

She lines the tip of her cock up with your ass and grips it with one hand, starting to push forward, "Fitting it inside the first time is the hardest part. If a girl has a large dick or even just a large head, it can start out very painful. You have to be very careful and patient" she explains towards the class.

Pushing forward, putting an increasing amount of pressure on your virgin hole, "Take a deep breath, and relax your sphincter muscles," Mrs. Snow instructs you. "When I push, keep your breathing smooth and controlled while you allow the mushroom to pop in you," she continues and gasps as the tip of her cock opened you up, the tip slipping into the incredibly tight star of your ass, "Ooooh fuck."

Pain explodes in your ass as the head pushes its way into you, jerking forward you try to escape but Mrs. Snow grips your hips and holds you, allowing you to get used to the girth of her member.

"Relax Doug. I know it's painful now but your hole will stretch and accommodate to my size," Mrs. Snow moans as she lets you adjust to her girth.

A minute passes, and she leans over you, nipping your ear. Her hot breath on your ear is making you feel confused as she whispers, her voice so seductive you feel like helpless prey, "Let's have some real fun now! Let's give your classmates a show they won't forget so fast."

With that the acclimatization period is seemingly over, her grip on you strengthens as she drives herself forward and down, pressing you into the desk as her cock sinks into you.

"Now that his asshole is acclimated to my dick, it is time to get screwed. While it's important to give your lover enough time to acclimate to your cock it's also important that you don't wait too long since you want to enjoy his hole while it's still tight."

You gasp sharply, your back arching as you feel everything inside you move out the way to make room for her huge cock, you feel like you are being split in two but, against all expectations, there is barely any pain.

The girls start to cheer on you and some are even jerking their cocks. Encouraged by their reaction Mrs. Snow bits her lip as she begins to hammer her cock home, driving it into your ass with wanton abandon, the wood of the table beneath you creaks obscenely in recognition of your lewd consummation.

Once you have caught your breath, lost in the feeling of her steeled shaft gliding in and out of your tightness you become more and more vocal, your airless gasps turning into whimpers, moans and eventually shouts.

You notice that the girls are grinning at you with a predatory smile and have the feeling they are dreaming about fucking you them self. Mrs. Snow is panting hard, enjoying how each of her thrusts into your ass is punctuated by a burst of noise from you, her actions are synced with your breathing to ensure no opportunities to make you squeal and squirm are missed.

Your hands are clawed at the table as she pounds you, your whole body shaking with the **** of her thrusts. Her attitude, you can feel is changing, she is squeezing harder, she isn't even pretending to teach anymore, her thrusts are shorter but harder, only pulling a few inches out before slamming back in.

Her hands tighten around your hip and you feel Mrs. Snow tense suddenly, pushing forward.

"I'm going to cum in your ass and want you to allow me to finish as I please. When most Futas start cumming, they will buck, shake, cram it far up you, violently grab and pull you to them, and so forth. Sometimes it can be slightly uncomfortable but it is polite to remain still and allow your lover to do what she wants since she has worked extremely hard pumping your asshole," she explains breathlessly, her fingers squeezing into your body.

You feel her cock throb, feel its pulse and feel a sudden, foreign feeling, a liquid heat surging deep inside your tight little body. Mrs. Snow pants as she climaxes inside of you, her grip lessening as she lets you relax, leaning over you, her thrusts slowing and stopping as she stays balls deep in you, letting each last drop of cum find its home in your body.

"That wasn't too bad Doug. I'll give you a B minus," she pants, swallowing as she ever so slowly starts to withdrew her softening cock from your stretched hole.