A promiscuous couple in the hospital

Li Guoliang and Song Ying were a happy young couple. They were classmates in medical school and went on to work at the same large hospital after graduation. Li Guoliang conducted research on male infertility and achieved good results, but this also aroused the jealousy of some people in the hospital. He reluctantly left the famous hospital and, together with Song Ying, who worked in laboratory testing, opened a hospital specializing in the treatment of infertility. Li Guoliang became the hospital director and personally treated patients, while Song Ying served as the head of the laboratory department. Due to their superb medical skills and shrewd management, their hospital flourished, attracting patients from all over the country.

One day, because everyone else was busy, only Song Ying was conducting tests in the laboratory. Since there weren't many people coming for tests, she stayed in the lab. These days, several of Li Guoliang's cases were at a critical stage. He spent his days seeing and treating patients at the hospital and his nights researching and searching for information. He hadn't been home for more than ten days, let alone had any sexual relations with Song Ying.

A few nights ago, Song Ying accidentally discovered a pornographic website at home. It contained many erotic novels, pictures, and movies. Out of curiosity, she checked it out. She had never imagined sex could be so wonderful. Looking at the arousing pictures and reading the exciting novels, Song Ying was deeply captivated. So, for the past few days, she visited the website every day after returning home. Gradually, she discovered she was particularly fond of group sex scenes, especially one woman with multiple men. Seeing such content made her sexually aroused.

A couple of days ago, she chose to download a movie featuring ejaculation. Last night, the download finally finished. After watching only one segment, Song Ying couldn't take it anymore—the video showed a man and woman having sex on a sofa, using various positions, and finally, the man ejaculated inside her vagina. This was a scene Song Ying had never seen before, because pornographic pictures usually showed semen on the face (probably because it couldn't be shown inside the vagina).

As she watched the man's penis throb and swell, and heard his cries, she knew that streams of semen were shooting into the woman's vagina. When the man withdrew his penis, milky white semen gushed out. Song Ying inserted her fingers into her own tender vagina, rotating them incessantly. She couldn't bear to watch any longer…

Today, as she sat alone in the lab suite, her mind filled with images of that throbbing penis and the flowing semen, she couldn't help but lift her light green nurse's uniform and her blue skirt, pull aside her panties, and insert her fingers into her tender vagina.

"Tap, tap…" Someone knocked on the lab glass, followed by a man's voice: "Is the doctor here?" Song Ying quickly withdrew her fingers, straightened her clothes, took a deep breath, and left the suite, going to the sample receiving room outside.

Standing outside the window was a handsome man in his thirties. He stared blankly at Song Ying, who was incredibly beautiful, her well-tailored nurse's uniform highlighting her firm, shapely 36D breasts.

Song Ying was used to such looks from men. She smiled and nodded at him, "Hello, are you here for a test?"

The man snapped out of his daze, his face flushing slightly, and quickly handed Song Ying the test report. Song Ying took the report and glanced at it; it was a routine semen analysis, the most common procedure at their hospital.

Song Ying picked up a semen sample from the container, then opened the door and walked to the man's side. "Please come with me."

She led him to a room next to the lab and pushed open the door. This was the "sperm collection room," tucked away in a quiet corner. The room was very clean, with a chair, a sink, and a provocative picture of a scantily clad woman on the wall.

Song Ying handed the semen sample cup to the man and said, "Please leave your semen sample here. Make sure it's in this cup. You need to open this door from the inside; it can't be opened from the outside. After you've collected it, please take this cup to the other room. Do you have any other questions?"

The man replied somewhat awkwardly, "No problem."

Song Ying smiled and said, "Okay, I'll go back now. Call me if you have any questions." After the man agreed, she turned and left the collection room, closing the door behind her. She didn't return to the suite inside the lab but sat by the sample collection window waiting for the man.

The time it takes to collect semen varies considerably; some men finish in ten minutes, while others take over an hour to collect a sample. Song Ying had joked about this with her lab colleagues, and they all agreed: those who collect samples quickly must masturbate frequently, those who collect samples slowly must be impotent, and only those who last a considerable amount of time have strong sexual ability.

About twenty minutes later, the man returned with the cup. At the window, his face flushed slightly, and he handed the cup to Song Ying. Song Ying knew that most men would feel shy at this time, firstly because they were sharing their semen with another woman, secondly because others knew they had just masturbated, and thirdly because men undergoing this test often had health issues, making them inevitably embarrassed.

Song Ying took the cup and, still smiling, let the man leave.

Usually, Song Ying wore a mask when having her semen tested; she didn't want to smell other men's semen. But today, for some reason, she hadn't even noticed she wasn't wearing a mask. She skillfully used a pipette to scoop some semen from the cup into a test tube, then placed the test tube into the electronic analyzer. After entering the options on the keyboard, the analyzer began the test. About seven or eight minutes later, the results came out. Song Ying glanced at the data: insufficient sperm count. She transmitted the results to the man's attending physician's computer through the hospital's diagnostic system.

Normally, once the test results came out and the lab technician deemed it normal, the sample could be disposed of. But today, Song Ying, inexplicably, didn't dispose of it. Instead, after checking that no one else was around, she picked up the semen cup and returned to the suite inside.

Song Ying sat in her computer chair, picked up the semen cup, and looked at the semen inside. Having been ejaculated more than ten minutes ago, the semen had liquefied and emitted its characteristic faint smell. Song Ying brought the cup to her nose and smelled it. Scenes from last night's video flashed through her mind again, and her body went limp.

Song Ying placed the cup on the table, leaned back in her chair, unhooked her bra, lifted her nurse's uniform and skirt, pulled down her panties, and inserted her fingers into her tender vagina. She recalled the scenes from the video bit by bit: the man's tongue licking the woman's clitoris, his penis thrusting in and out of her vagina… Her left middle finger moved in and out of her vagina, rotating, while her right hand alternately touched and pinched her nipples. Her body twisted and turned; she felt that her fingers inserted into her vagina were too thin and too short.

Slowly, her memory drifted to the scene of ejaculation, recalling the man's glans inside her vagina, the throbbing of his erectile tissue as he ejaculated. Song Ying was incredibly impatient; she felt her fingers were too weak to satisfy her. At this moment, she desperately wanted a large penis to penetrate her tender vagina and fuck her hard. Song Ying sighed painfully. Suddenly

, her gaze fell on the semen cup on the table, the milky white semen inside instantly brightening her eyes. Yes, there was no penis, but there was semen!

Song Ying lifted her leg and pulled down her pink panties, lifting her nurse's uniform and skirt to her waist, exposing her entire snow-white lower body. She leaned back in the computer chair, one hand on her tender vagina, the other kneading her nipple, masturbating while recalling the sexual scenes from the film.

Recalling the scene of ejaculation, Song Ying took the semen cup with her right hand, deeply inhaled the smell of semen, and then inserted her left middle finger into the cup, slowly dipping it in. The semen was already cool, but the stimulating sensation still made Song Ying feel hot all over. Since the semen was only a few millimeters deep in the cup, barely wetting her finger, she had to tilt the cup and rotate her middle finger inside to get the entire finger covered in semen.

She put the cup down, placed her legs on the armrests of the chair, and fully exposed her vulva. She stimulated her clitoris and labia with her right hand, recalling the scene of men ejaculating in the film, and then slowly inserted her semen-covered left middle finger into her vulva.

"Ah..." When her middle finger was fully inserted into her tender vagina, Song Ying couldn't help but let out a cry. The feeling was so wonderful; the stimulation of semen on her tender vagina was incomparable to anything else!

Song Ying slowly rotated and thrust her finger in and out, carefully savoring the pleasure brought by the semen. Every part of her vaginal wall trembled when it touched the semen. Finally, every part and every corner of her vagina was covered with semen. The semen combined with her vaginal fluid, forming a lubricant between the vaginal wall and her finger, making her finger move incredibly flexibly.

After less than ten thrusts, Song Ying couldn't hold back anymore. Her waist and chest arched upwards suddenly, and her entire vaginal wall began to contract violently. She even felt as if her middle finger was locked, unable to move inside her vagina. Song Ying bit her lip tightly to keep from crying out. She felt this was the most stimulating masturbation she had ever experienced.

From then on, Song Ying developed a liking for semen. She gradually reduced the number of people in the laboratory, usually doing the tests herself, only occasionally having someone else do it for her. After each test, she would masturbate with the semen sample, her tender vagina being exposed to different men's semen almost daily.

Nourished by numerous semen, Song Ying's face became increasingly delicate, and her breasts fuller, to the point that Li Guoliang felt his wife was becoming more and more alluring. She also became increasingly clingy in bed, wanting him almost every day, and demanding he ejaculate inside her each time, experiencing intense orgasms with each thrust.

After a while, Song Ying gradually became dissatisfied with masturbating with her fingers and using them to introduce semen. She felt her fingers were short and thin, and the semen she introduced lacked the impact of her husband's ejaculation. She began to look for new methods.

Her efforts paid off; she discovered a prosthetic penis on an adult product website that could be injected with warm water and then ejaculated to simulate ejaculation. Excited, she quickly ordered a flesh-colored prosthetic penis, finding it very realistic. She slightly heated the semen with warm water and injected it into the artificial penis, then turned it on. The semen sprayed out from the urethral opening of the artificial penis, with a range of about ten centimeters, very similar to ejaculation from a real penis. From then on, Song Ying began to "have sex" with the artificial penis every day.

Of course, Song Ying had all the semen samples rigorously tested to ensure that there were no sexually transmitted diseases and that she wouldn't get pregnant. At the same time, she didn't forget about that pornographic website. Whenever Li Guoliang wasn't home, she would browse it and download videos, choosing only those involving internal ejaculation.

One day, she saw a group sex video with internal ejaculation. It showed two men and a woman having sex. The two men took turns, kissing and licking each other's vaginas, sucking on each other's breasts and fucking each other, taking turns fucking each other. Then one man ejaculated inside the vagina, and the other man immediately inserted his large penis into the vagina that had just released semen. With the thrusting of his penis, the white semen stuck to his penis and was pulled out, covering the woman's pubic hair with semen.

The final scene showed the second man ejaculating inside the woman's vagina, with the woman squatting on the ground as the semen of both men gushed out… Song Ying watched the video, her hand inside her vagina, imagining how stimulating it would be to have two men's semen inside her.

The next day, unable to resist the urge to try it, Song Ying bought another artificial penis. The following morning, within half an hour, two men arrived to analyze her semen, and both were very quick, completing their tests in ten minutes each. Song Ying cleanly and efficiently finished the tests and hurriedly returned to her suite with the two cups of semen.

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