Chapter 37: The Prone-Bone Protocol
The amber light in Studio B felt different today. It was still intimate, still a warm pool in the center of the soundproofed space, but the energy had a new, focused charge. The half-empty bottle of whiskey on the oak table caught the glow, liquid gold in the dimness. Lena tapped a fingernail against the stack of Femina Quarterly magazines, her other hand resting on the unmarked laptop.
“Protocol: Prone-bone,” she said, her voice low and businesslike. “Primary subjects: Chloe and Maya. Aidan, you are the constant. The variables are hip elevation, lumbar curve, and subject-reported sensation mapping. Our objective is to generate a reproducible guide for achieving comfort and cervical-avoidance in this position for partners of significant disparity.”
Chloe was already stretching her lower back, rolling her shoulders. Her freckles seemed to dance under the low light. “I’ve been thinking about the wedge positioning all night. A higher angle might direct pressure more toward the anterior fornix, right?”
“Theoretical,” Maya corrected, kneeling on a cushion and sketching in her notebook. She’d drawn a rough schematic of the pelvis. “Without real-time internal feedback, we can only hypothesize. We need to test low, medium, and high elevations and record subjective feedback after each.”
Aidan poured a tiny splash of whiskey into a glass, more for the ritual than the taste. The peat-smoke scent grounded him. “So, who’s first on the anatomical altar?”
“Me,” Chloe said, her eagerness undimmed by the clinical language. She walked to the center of the cushion area, lay down on her stomach, and pillowed her head on her folded arms. She looked back over her shoulder, her expression a mix of trust and fierce curiosity. “Start with the low wedge, please. Let’s build the data set from the ground up.”
Lena placed a firm foam wedge under Chloe’s hips. It was a subtle lift, just enough to tilt her pelvis. “Subject one, elevation Alpha. Aidan, kneel and position. Chloe, guide initial depth.”
Aidan moved behind her, the familiar view now part of his strange professional landscape. He ran a hand from the small of her back down to the curve of her hip, feeling the warmth of her skin, the slight tremor of anticipation. “Alright. You set the meet-point. Just like before.”
He guided himself, the broad head of him nudging against her. Chloe took a slow, deliberate breath, pushing back just enough to allow him to breach the entrance. A soft, shuddering sigh escaped her. “Okay. That’s… baseline penetration. Full stop.”
He held perfectly still, the overwhelming heat and tightness a familiar shock every time. “Report,” Lena said softly from behind her laptop.
“Initial stretch is… pronounced. More than in cowgirl. The angle feels… direct. Straight-line pressure.” Chloe’s voice was tight but analytical.
“Can you accommodate further without discomfort?”
“Yes. Slowly.”
Aidan obeyed, inching forward by millimeters, each fraction of advancement a negotiation with her body’s feedback. He watched the muscles in her back flutter, then relax. When he was fully seated, a deep groan was punched from his chest. She was incredibly tight in this position, a velvet vise.
Chloe moaned, the sound muffled by her arms. “Oh. Wow. That’s… a lot of presence. It’s not bad. It’s just… everywhere, but deeper in the front.”
“Anterior wall,” Maya noted, scribbling. “Consistent with theory.”
“Begin movement,” Lena instructed. “Shallow, rhythmic oscillations. Chloe, focus on pressure mapping.”
Aidan withdrew slightly, then pushed back in, keeping the stroke short and controlled. The slick, wet sound was loud in the quiet room. Chloe’s fingers clenched in the cushion fabric. “There,” she gasped. “Right there. A… a spot. It’s like a… a deep fulcrum.”
“Increase tempo by twenty percent,” Lena said.
The rhythm changed. Aidan found a smooth, steady pace, each thrust rocking Chloe’s body forward. Her analytical murmurs dissolved into broken, pleasurable sighs. “The wedge… it’s keeping the angle perfect. It’s not hitting my cervix. It’s… it’s going around it. Oh, god.”
Her back began to arch, a beautiful, involuntary curve. The clinical detachment shattered. “Aidan, please, don’t stop, that’s it, right there, right there!” Her voice climbed, lost to sensation.
He focused on that spot, the one that made her words disintegrate. His own control was a thin wire, strained by her tightening around him, by the raw, unvarnished sounds she was making. Her climax built audibly, a rising tide of hitched breaths and desperate little cries, until it broke over her in a series of sharp, stunning quakes that pulled a ragged shout from her throat. She collapsed, breathing like a runner.
Aidan stilled, panting. Lena’s keyboard clicked rapidly.
“Subject one, elevation Alpha: successful. Cervical avoidance confirmed. Report on orgasm quality relative to previous control positions.”
Chloe, face still buried, gave a thumbs-up. After a moment, she turned her head, cheek against the cushion, a dazed, triumphant smile on her flushed face. “More… concentrated. Less diffuse than cowgirl. Like all the sensation was focused on one internal button. A-plus. Would recommend.”
Maya looked from her sketch to Chloe’s spent form. “Empirical data suggests the hypothesis is correct. My turn.”
They switched. Maya arranged herself with geometric precision, adjusting the wedge herself to what she deemed a “moderate, fifteen-degree lift.” Her notebook was placed within sight. “I will attempt to verbalize sensations until cognitive function is compromised,” she stated.
Her entry was, as before, a systematic process of incremental acceptance. Her breath hissed between her teeth, but her voice remained steady. “Depth achieved. Sensation: intense fullness. Pressure vector is anterior and superior. No sharp pain. Discomfort threshold is high but manageable.”
Aidan moved, guided by her stark, breathy commands. “Five-centimeter withdrawal. Re-engage. Slight adjustment to left. There. Continue.”
It was like being piloted by a profoundly sensual architect. Her body, however, began betraying her clinical intent. Her precise vocabulary fractured into “oh” and “yes” and “there, right there.” Her hands, which had been flat on the cushion, balled into fists. The measured rhythm she dictated became a broken, pleading stutter.
“I am… losing… linguistic coherence,” she managed to gasp, a final, glorious admission of defeat. Her analytic mind was swept away by the physical truth of the act. Her orgasm was silent but total, a rigid, shaking seizure of pleasure that left her limp and wordless, her schematic forgotten.
Lena closed her laptop lid. “Protocol successful. Data is conclusive. The prone-bone position, with appropriate hip elevation, is not only feasible for significant size disparity but can optimize targeted stimulation.”
Aidan withdrew, sitting back on his heels. The room smelled of sex, whiskey, and warm skin. Chloe had rolled onto her side, watching Maya come back to herself. A comfortable, exhausted silence settled over them, broken only by the distant hum of the city beyond the blinds.
Lena poured two more fingers of whiskey, handing one glass to Aidan and sipping the other herself. She looked at the two interns, then at Aidan, her knowing smirk returning, but it was softer now. “You’ve created a competent research team.”
“They did the work,” Aidan said, the whiskey burning a pleasant path down his throat.
“We did,” Maya affirmed quietly, sitting up. She reached for her notebook, not to write, but to close it. “The data is robust.”
Chloe laughed, a happy, exhausted sound. “Robust.Yeah. That’s one word for it.”
Lena set her glass down with a decisive click. “The success of this protocol opens a new line of inquiry. The next question from the inbox is… more complex.” She looked directly at Aidan. “It concerns prolonged duration. Stamina. Edging techniques for partnered play over extended periods. The reader wants to know how to manage a partner whose… endurance matches his size.”
Aidan felt a new kind of tension, one that wasn’t about geometry or angle of attack, but about sheer staying power. The physical challenge was one thing. This was psychological. A marathon, not a sprint.
Chloe’s eyes lit up. “Ooh, like a longitudinal study.”
Maya reopened her notebook. “We’d need to monitor heart rate, perfusion, subjective fatigue markers…”
Lena nodded. “It’s the logical next step. But it requires a different kind of protocol. And a different kind of submission from the constant.” Her gaze was steady on Aidan. “It’s not about a single position anymore. It’s about sustained performance under managed stimulus. Think you can handle turning your physiology into a multi-hour laboratory?”
Aidan finished the whiskey, the warmth spreading through his chest. He looked at the three women—the bold scientist, the eager convert, the meticulous analyst. The momentum from today’s success hummed in the air. He was no longer a reluctant tool. He was the cornerstone of a truly bizarre, wildly effective research institute.
“When do we start?” he asked.
Lena’s smile was all the answer he needed.