From clues in this story fragment, it appears that poor Becky is in the clutches of an unspecified villain who (a) plans to sell her onward into sexual slavery and (b) is offended by some sort of prior sexual rejection on her part. Now she’s being punished:
I pick up the birch rod and step back a few paces, moving the chair to the side and watching Becky start to compress her bottom cheeks, her arms pulling against the restraints tied tightly around each wrist. I smile as I hear Becky in the background start to plead, no doubt asking for another chance, but my mind was fully occupied with the plump full ass now contorting in a lewd dance over the table top.
I fish her panties out of my coat pocket, with one hand, swishing the whippy birch rod through the air with my other and relishing the sound the fine instrument made.. “You’ll do anything, anyway, my dear Becky. You know what’ll happen if you don’t…”
I smile at her in the mirror and wad up the panties and push them into her mouth. “If those panties leave your mouth at any point, your punishment will be increased ten-fold. Do you understand me Becky ?” Becky silently nods her head, her eyes wide with fear.
I take a few steps back, standing to her right, and bring the whippy-ended birchrod up sharply and step forward, bring the rod through the air sideways with a backhanded motion, and deliver a fine cut low down across Becky’s straining asscheeks. WHIP!!!!!
The rod blazed a bright red strip across the girl’s bottom cheeks, low, where her upper legs swell into her bottom. Becky pulls hard against her restraints, her curly blond hair flying in to the air with the smarting impact of the blow, her legs tensed and her bottom cheeks compressing hard, and then bounding up. I step forward again, my eyes glued to the bare trim rounded pallor of Becky’s bottom cheeks, tensing and shifting, her hips contorting over the top of the fat pillow cushion.
“Keep your chubby backside quite still for it, Becky. Push those hips back up over that pillow you young tramp!”
WHIP! WHIP! WHIP!
I delivered three quick hard cuts right through the middle of Becky’s tender bottom flesh, the rod singing through the air, the impacts sounding like pistol shots as they meet Becky’s churning white bottom flesh.
Another cut delivered with vicious accuracy across Becky’s ass, aimed low, and at an angle, stripping Becky low down across the top of her bound legs, and letting the tip of the whippy-ended birch rod ride up, just catching her across the puppy fat fuller cheeks well low down on her bottom. Becky was frantic, she let out a long low gasp of agony, then a series of fast paced loud objections, her pretty blond head turning from side to side rapidly, her mane sweeping across the polished oak table top, her knees trying to draw up and rubbing against each other under the leather binding strap.
I tapped the rod on the top of her now-quivering pert bottom, enjoying the sight of the angry red lines now starting to grow against the white background of her plump bottom cheeks. Becky was tensing and releasing her plump bottom halves, squirming across the top of the pillow booster in lewd and seductive fat-assed quiverings. Her strong bottom would drive out, hips raised, and then buck back as far as the straps would allow, giving her a wanton and whorish look, like a bride inviting her lover to take her bottom in a fit of honeymoon passion. “I’m going to break you this afternoon Becky, just like a young filly is broken to the bridle…”
WHIP! WHIP! I gave her two hard brisk strokes across the plump center of her shaking ass cheeks. “I’ll have obedience from you!”
WHIP! ” Bend tighter, I want a full-bottomed cheek swell.”
WHIP! WHIP! Two more stinging reminders, delivered down low, across the fatter cheek swell of Becky’s bottom lobes. “We have all afternoon Becky, no interruptions. WHIP! “When I am finished with you, we’ll have an obedience test.”
Again and again I whipped her plump backside, my mind lost in a haze of erotic discipline. My cock was straining against the rough fabric of my wool trousers, and my breathing was coming in large gulps, sucking giant mouthfuls of air in to my lungs as I let the rod fall across the middle of Becky’s girlish white cheek-swell. “Better get use to this, Becky. When you leave here, you’ll have masters who enjoy whipping tramps like you. They’ll enjoy whipping your bottom and you’ll learn to enjoy slavegirl sex up that tight little bottom passage of yours!”
I look at Becky’s face, turned sideways, her damp, tear filled eyes clear to me in the the mirror. She has a questioning look, wondering if I am done punishing her.
“You didn’t think a little schoolgirl-style discipline would completely satisfy me did you?”
I laugh, drunk on desire.
“Oh, no Becky. I haven’t forgotten what you refused me this morning!”
Becky lets out a loud muffled protest, pleading with her eyes. She is making small mewing sounds from behind the panty gag, trying to beg.
I undo the top button on my trousers and let them drop to the floor, my cock now standing straight and hard and angry.
I pull a small tube of lubricant from my coat pocket, and smear a light sheen of the lubricant up and down my penis head, watching Becky’s eyes follow the movement of my hands across my fully erect cock in the mirror reflection.
I coat the end of my finger and push them between Becky’s parted asscheeks, running my goo-coated finger up and down between her clenching warm chubby bottom halves.
Becky’s rear mounds clench hard as I find her anus and lightly trace small soft circles all around the little ridges that lined her anal bud. She gasps as I slowly insert my finger into her bottom, first just the tip, crossing her tight opening, then slowly making her take more and more of my warm finger up her backside.
I start to slowly frig her backside with my finger, pushing my finger in slowly, feeling the tight anal ring expand over the thicker part of my finger, then letting it slide back out, till just the tip was inside her bottom. I’d gently push an inch of my finger in to her, then let it slide back out, then two inches, and let it slide back out, watching Becky tense her legs, her white bottom cheeks swishing a little from side to side, and her knees rubbing together. I would slowly push my finger in her and gently turn and twist it, small half-circles while fully up her backside, my finger worrying her little tight ring, and then slowly start working my finger in and out of her tensing bottom, pushing now till it was all the way in, up so snug and full in her.
I started to more quickly frig Becky’s tight little bottom hole, pushing more of my index finger into her anus, pumping my finger in and out in a slow deliberate motion, working her tight bottom ring with small twists as I pushed in, then pulling out at a faster pace, feeling Becky jerk a little as I turned my hand over, this way and that, twisting my finger in a small rotation while I held it deeply embedded in her bottom. I could hear small urgent moans coming from this captured girl’s panty filled mouth, caught between the humiliation of having her bottom so openly and unabashly played with, an object of simple lust openly frigged with a man’s large rough finger, and the arousal now starting to overtake her outrage. I pull my finger all the way out, watching Becky’s opening go suddenly small.
I stand up and push myself forward, my erect cock laying in the warmth of Becky bottom divide, letting the head of my penis loll in between the globes of her ass, savoring the moment; knowing how tight it’s going to be and reveling in her resistance and her humiliation.
I start to slowly push the head of my penis past her small tight anal ring, holding my breath, the veins on my forehead showing with the staring of my effort. Becky’s muffled cries are becoming louder as the pressure builds…
This was uncredited where I found it, but from the style I think it may have been originally written by Richard Manton, with possible subsequent edits by parties unknown. Many years ago Manton authored a plethora of overwrought BDSM novels for the Blue Moon erotic publishing imprint.