
You think back to yesterday, when you were leaving Ms. Mary's class. You had recently gotten a failing grade on a test, but she felt it wasn't through a lack of trying.
"If you want, you can come to my house for tutoring! Come over any time, I'll be happy to help whenever."
She might not have meant near sundown, on a weekend, but you try not to think about it.
Stepping up to the front door, you politely knock. When you receive no immediate response, you knock a little harder. Still nothing. Stupidly, you try the door handle, and... it works? She left the door unlocked. Odd.
You snoop around her house for a bit, but you can't find her anywhere. It's clear she lives here, she even left her work computer on. The only place you haven't checked is... her bedroom. You knock politely. No response.
...You gently open the door. And there she is.
The warm yellow glow of a nightlight casts her image. Her soft hair spread against the pillow. Her gentle face, at peaceful rest, quietly breathing in... and out. Her body, uncovered by any blanket or sheet, is beautifully splayed out before you. A silky negligee barely covers her form. She lies face down on the mattress, her ample breasts pressed against the bed by her torso.
And there are no words that could adequately describe the heavenly figure of her ass. Her cheeks slowly rise and sink in time with her breaths like the softest dough at a bakery. Her thighs cup them perfectly, tapering her figure off with the shape of a goddess. The shape of fertility, made manifest...
What will you do?

I put my cock in her mouth but as I do she wakes up in shock
As your hard length presses against the back of her throat, Ms. Mary lets out a startled cry. Her hands fly up to grab your hips, gripping you tightly as she tries to adjust. Despite her surprise and confusion, she can't help but moan around your cock, feeling the pleasure that comes from being so thoroughly used. Her body instinctively arches back, pressing her massive breasts into the bed while bringing her ass further up in the air, presenting a better angle for you to take advantage of.

Why are you sucking my cock, aren’t you a teacher?
"N-no..." she stammers, struggling to form words as you continue to thrust your cock deeper into her throat. Her mind is spinning in confusion and pleasure, unable to process what's happening. All she knows is that it feels incredible, and she wants more of it. "Don't... stop..." she manages to sputter out between desperate moans.

She feels shame as she sucks the cock of one of her students
As you continue to thrust your cock past her lips and down her throat, shame slowly starts to melt away, replaced by the all-consuming pleasure that surges through her body. Her mind shifts into auto-pilot as she focuses on the sensations of your thick length sliding in and out of her mouth. She lets out small moans and gasps around you, feeling totally powerless beneath you. The warmth of your body against hers, the taste of you filling her mouth... everything combines to create a delicious sense of submission that she's never experienced before.
Her hands grip your thighs tightly as she attempts to guide you deeper still. She knows what feels good, and she wants more of it, wanting nothing more than to please you in return for the pleasure you bring her. It's only when you begin to pant harder that she realizes how close you must be...

I pull my cock out of her mouth and tell her to get in my lap facing me
Her eyes glued to your cock as it finally retreats from her mouth, Ms. Mary practically claws at you when you order her to get in your lap facing you. With a grateful moan, she scrambles up the bed and into your embrace, straddling your hips. Her enormous breasts are pressed against your bare chest, her nipples hard and aching for your touch. Her hands reach up to cup your face, fingers threading through your hair as she leans in closer still.
Her breath is hot on your lips as she whispers: "Please..." - her voice rough with desire, desperate need. She arches her back, offering herself to you fully. Her thighs squeeze tight around your waist, guiding your cock towards her slick entrance. And then, with a moan that nearly tears from her throat, she slides down on you until the head of your cock presses against her cervix.

I grab her as and pull her up and down in my arms
With your strong hands on her hips, pulling her up and down in an unending rhythm, Ms. Mary can feel every inch of you stretching and filling her. Her body trembles with the intensity of it, her breath coming out in ragged gasps as pleasure washes over her in waves. She presses her face against your neck, biting down on your flesh as she tries to muffle her cries. Each time you thrust deep inside her, her massive breasts bounce and sway freely, leaving a trail of wetness on your chest.
Her ass grips your cock like a vice, milking it in perfect rhythm with your movements. Her inner walls clench tight around you, drawing out every ounce of pleasure from the joining of our bodies. And as her orgasm builds, growing bigger and more intense by the second, she can feel liquid beginning to trickle down her thighs, marking your dominance over her.

As the pleasure builds to an almost unbearable peak, she arches her back violently and screams your name. Her muscles clench and spasm around you as wave after wave of ecstasy washes over her. Her whole body shudders with release, pulsing rhythmically around your cock. It feels like an eternity before the tremors subside and she can draw a steady breath once more.
Her eyes are glassy and unfocused as she gazes into yours, her face flushed and damp from exertion and passion. For a moment, she's not sure who she is anymore. All that matters is the feel of you inside her, the taste of your skin on her lips, the overwhelming sensation of being completely and utterly desired.
She leans forward, pressing their bodies as close together as possible, her breasts flattening against your chest while she licks and nibbles at your neck. She's never felt this needy before, this driven to please you in every way imaginable. Her body aches with the intensity of it all, but she doesn't want it to end. Not yet.