This piece was written back in February as part of a competition over at Erotic Meet… The Big Ohhhhh!

It came joint second! Enjoy, then afterwards make sure you pop over to visit the Erotic Meet Website.

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“So you failed to pass this assignment Stephanie. 54%* is neither useful to the reputation of this department, nor enough to allow you to pass this semester.”

Mr. Fletcher paused and looked directly at her. His face was stern, his voice hard. She felt herself try to hide behind her loose hair, her hands nervously playing with the textbook on her lap.

“As a result you will need to pass this here today and demonstrate that you fully understand the physiology we discuss.”

She didn’t look up. Furiously blushing with the humiliation of failure she kept her head down and eyes focused upon the desk. She nodded, blinking back the tears welling behind her eyes.

“Now the assignment was to demonstrate your knowledge of reproductive physiology, with particular reference to the characteristics of the female, yes?” He asked rhetorically, making her squirm uncomfortably under the directness of his question.

“Did you hear me Stephanie?” his voice hardened as he spoke her name. She nodded.

“Right now shall we begin?” He flipped open the textbook and located a passage of text. She opened up her own textbook however before she found the right page he addressed her.

“You will remove you skirt and underwear.”

Her body tensed, her head jerked up and she starred at him.

Had he just told her to remove her knickers? He hadn’t looked up.

“What are you waiting for Stephanie? You don’t want to fail this module again now do you?”

She stood quietly and submissively removed her skirt. She looked at him but his eyes were still down immersed in the text. She hesitated to remove her knickers.

He stood quickly, his dominance over her now in stature and position. She bent and removed her underwear and stood in front of him naked from the waist down, overtly conscious of her lack of clothing but more disturbingly the heat from between her thighs.

“We will start with the basic physiology. As you seem unable to understand this through my lectures I thought a practical session might fit better with your learning style.”

He continued to talk to her as he walked behind her,

“Both sexes experience four stages of sexual cycle. Excitement, plateau, orgasm and resolution. The physiological mechanisms responsible are fundamentally the same in men and women.”

She stood still, unsure what to do with herself, her body feeling awkward. She held her hands together. Her fingers laced to stop them desperately covering her exposed flesh.

“Excitement can be initiated by either physical or psychological stimuli, or both.”

Stephanie felt embarrassed by his words. She tried to listen and retain what he was saying but all she could hear was the blood pumping in her ears.

“I said bend over the desk.” He barked.

A hand sharply smacked her on the bottom and pushed her forward. She landed on the desk, her body now flexed and exposed. “Do not make me repeat myself again Stephanie.” He warned.

She wasn’t sure whether to protest but something inside her knew this wouldn’t be wise. She felt the prickling heat rise again between her thighs as he held her over the hard wooden desk. She fought her inner monologue which questioned her sanity as she allowed him to hold her here without a struggle.

“Now excitement is very important in sexual physiology. Can you tell me why Stephanie?”

Her brain and her voice seemed to have parted company. She knew she should answer but hadn’t the faintest idea what to say or even how to say it. She murmured something which she couldn’t even understand herself.

“If you do not understand then perhaps I will have to show you” he sounded frustrated but at the same time he spoke with a hint of excitement.

“Excitement is important as it is the first stage of the sexual cycle” he began. He continued to hold her to the desk but with his other hand he gently stroked her up the back of her thigh up to the crease of her buttocks. She shuddered.

“The physical and psychological stimuli, for example touch, voice, fantasy, imagination trigger spinal reflexes that cause parasympathetic vasodilatation of arterioles throughout the vaginal and external genitalia.”

As he spoke his hands explored her, running the length of her bare thighs, cupping her buttocks, gently squeezing them. His fingers dipped into the crevice between her cheeks, while purposely avoiding the area of her genitals.

“The vasodilatation causes an inflow of blood to the genital area.” He brushed the lips of her pussy gently, she twitched. “This in turn causes swelling of labia and erection of clitoris, which is mainly made of erectile tissue.” He pushed his hand between her legs grazing the sensitive tissue of her pussy. She flinched. He pushed against her momentarily, as he released his pressure her cunt followed him begging to be touched.

He smirked to himself. Got you he thought.

He turned her over and lifted her chin. She averted her gaze avoiding all eye contact. He laid her back onto his desk.

“So if you are excited” he continued, “there is vasocongestion of the capillaries within the vagina”. He bent up her knees and parted them, opening up her cunt in front of him, a visual aid while he taught.

“The vasocongestion forces fluid out of the vessels into the vaginal lumen. This fluid is the first positive indicator of sexual arousal, it serves as a lubricant for intercourse. Do you understand what this means Stephanie?”

She began to think of an answer but the words failed to form in her mouth.

“It means your tight little pussy gets all wet” he said looking directly at her.

His coarseness shocked her. She squirmed under the intensity of his gaze

His fingers moved to her pubic rami just above the tousled mound of her bush. He gently stroked over the wiry hair lingering just above the parting of her outer labia.

“Shall we see if your pussy is wet?”

She groaned as he parted her and his fingers slid easily into her silky wetness. She knew she was aroused but the extent of it shocked her as he slipped through her slit. He pushed two fingers into her up to his knuckles, he gently moved them in and out deliberately catching her G-spot and watching her reaction as she silently writhed under his attention.

He pulled out his fingers suddenly and she looked up at him, desperation in her eyes, unabated before she had the chance edit her reaction. He laughed and she cursed her own inability to hide how much she wanted him to do this.

The teaching continued, “Additional lubrication is provided by mucus secretions from the glands at the outer opening of the vagina.”

Stephanie tried to pull herself back into reality, to listen to the words, to stop her mind focusing solely upon the throb emitting from her cunt.

“Additionally during the excitement phase the nipples become erect and the breasts enlarge”, he teased, her nipples obviously hard underneath her blouse, he squeezed one tightly and she gasped at the pain.

“And” he continued, “The majority of women also show a sex flush caused by increased blood flow to the skin. I notice that with you Stephanie it is the skin above your breasts where this is most evident”

She blushed furious at her own body’s reaction and her inability to hide her wanton state, his words humiliating her yet seducing her even further. She was definitely fulfilling the excitement stage of the cycle and he had barely touched her.

“Next the body reaches a state of plateau” said Mr. Fletcher. “Now this does not imply that the excitement of the genitals diminishes just that the changes initiated in excitement phase intensify”.

His hand slid back into her cunt. His fingers working between her swollen clit and her aching pussy she felt shivers of anticipation jolting through her groin.

As he spoke about the body’s systemic responses she hardly listened, her pulse soared, her breathing quickened and her muscles tightened in response to her ever increasing need and lust. Heat seemed to spill out from her pussy, filling her abdomen, waves flowing over her then receding back into her cunt further heightening the intensity of her.

He was telling her something about the vagina tightening around the thrusting penis, thus heightening tactile sensation for the male but she was beyond the point of absorbing his words. Her rudimentary systems seizing control of her brain.

He gripped her chin and forced her to look up at him as his hand stopped moving.

“You don’t seem to be listening Stephanie”

He enjoyed saying the words, bringing her back under his control. She hissed her displeasure. He laughed at her reaction as her juicy cunt searched for his touch.

“Now Stephanie we reach the interesting part”

His hand again began to stroke her clitoris firmly, delving in and out of her vagina, teasing, tempting her tightening hole. She sucked in her breath as her body responded to him. Her pussy began to tighten and she felt the need for something to be firmly inside of it. She clenched her pelvic floor around his fingers as he pushed deep inside of her. Her breathing now coming sporadically inhaled and held hostage as she stripped it of the oxygen she needed to feed the hungry filaments working deep within her core. Her heart thumped hard, it seemed to beat the blood directly to her cunt dilating it further and flooding it with wetness.

He was still speaking. She could no longer co-ordinate her thoughts to listen.

“If erotic stimulation continues the sexual response culminates in orgasm as the sympathetic impulses trigger rhythmic contractions of the pelvic musculature at 0.8 second intervals. The contractions occur most intensely in the engorged lower third of the vaginal canal, hence this region is often referred to as the orgasmic platform.”

She felt her whole body tighten as her orgasm built within her cunt, the heat radiating out into her whole abdomen and pleasure flooding her senses. Her fingers tingled with the lack of oxygen as her body diverted it away from the periphery. She knew how close she was as her upper lip begun to fizz, a certain sign of her imminent orgasm. Beads of sweat formed on her forehead ad she tensed and clenched her pelvic muscles forcefully around her lecturer’s hand.

“Systemic responses are parallel to those of a male.” He continued to teach as his fingers brought her towards orgasm on top of his desk in amongst the physiology notes from the semester.

“For example, heavy breathing, heart rate increases to 180bpm, there is marked generalized skeletal muscle contraction”

As he fucked her harder she felt the building intensity within her pussy, urgency, an immediate need giving way to pleasure. It heightened and she literally exploded over his hand. She cried out unable to control herself, grinding her whole pelvis down onto his fist. She felt the spasms take over her pelvic muscles and leap outwards down her legs, sending shock like spasms all the way to her toes. Heat swept through her whole core, taking with it the throbbing pleasure being emitted from her cunt.

“Heightened emotions are characterized. This is commonly known as orgasm. Orgasm is associated with feeling of release and complete gratification.” He continued his teaching as she closed her whole body around his knuckles. Her abdominals burning with the activity, her whole musculature contracted, flexed, powering her orgasm through her skeletal myofilaments. She realized she was gripping his shoulders tightly, using his frame to hang from as her orgasm peaked before the pleasure dispersed gradually.

Heat, release, muscles unwinding in its wake, the orgasmic pulses dwindled. She breathed deeply as her pussy twitched and her thighs trembled from the force of her pleasure. She lay back onto the desk allowing her breathing and heart to slow and even out before she dared to open her eyes.

He was looking down at her. A smile played on his lips. She looked back into his eyes.

“There is no female counterpart to ejaculation, although the research seems to be flawed.” He added, grinning at the thought which flashed through his mind.

“Importantly there is no refractory period so females can respond immediately to continued erotic stimulation and can achieve multiple orgasms. If stimulation continues the sexual intensity only diminishes to the plateau level following orgasm and can be quickly brought to peak again.”

He smirked as he completed the teaching, his fingers gently stroked her throbbing clitoris and she moaned.

“Now for the revision” he chuckled.

The sexual cycle began again.

This post originally appeared at misslilyspad.com/the-science-of-stimulation