Laboratory escort

It was 6 PM on a Sunday afternoon. Most university students were away studying, and since professors didn't offer after-school tutoring, both teachers and students had already left the campus, leaving only security guards and a few enthusiastic club members.

I quietly led the girl behind me up to the third floor. Reaching the optics lab, I used the key I'd borrowed to open the door and urged her to hurry in. If we ran into classmates at this hour and they saw me with a woman in the lab, I'd be in deep trouble. This girl's name was Aya, my girlfriend's classmate. She was tall, about 170cm, and very slender, but her breasts were quite small. She'd come to my small apartment to shower several times because there was no hot water in her dorm. Since she was my girlfriend's classmate and a pretty girl, I couldn't refuse her. After a while, she started taking advantage, often taking my girlfriend's key and showering directly in my room. Although it was a bit unbearable at first, I got used to it.

This is in my room; after showering, she was only wearing a hoodie and taking a selfie with my phone by my bedside.

"Ah Shu! It stinks here! Can I turn on the exhaust fan?" She seemed a little uncomfortable with the smell of chemicals used for developing film in the lab.

"Turning on the exhaust fan will just mean waiting for the guard to open the door. If the guard sees the exhaust fan on, he'll definitely come in and turn it off." As a physics major in college, I often spend more than 10 hours a day in the lab, so I'm used to the smell of chemicals here.

We met here not to do experiments, but because a week ago I saw her photo posted on a porn site. She claimed she urgently needed money and wanted to make a "transaction." After contacting Ah Ya through the phone number she left online, she said she had been posting there for several days and had even met with some men, but everyone refused to do the transaction because they thought her breasts were too small. Considering that seven thousand a time was indeed not cheap, and her breasts were too small, it was no wonder that some people disliked her. After meeting her, she immediately knew who I was. Because of my girlfriend, she was initially reluctant, but when I suggested that the transaction be done in the lab—it was exciting, convenient, and not easy to be discovered—she immediately agreed.

We walked to the shockproof table. Because optical experiments require absolute zero impurities, it was regularly cleaned by students on duty, so the tabletop was spotless. All the lab windows were covered by curtains, so there was no need to worry about being seen. I turned and closed the door, locking it from the inside; Aya watched me lock the door with a bit of worry.

"Don't worry, even in our department, very few people come here. We can just keep our voices down," I said reassuringly.

"Can you not tell your girlfriend? I still want to be friends with her," she asked honestly.

"Of course I won't tell her! I want to live a few more years," I said, nervously touching my neck. My girlfriend was notoriously jealous; if she found out I was cheating, it wouldn't be a death sentence.

"Okay! Let's begin!" I said to Aya.

Aya turned her back to me and slowly pulled up her sweater to take it off. I unbuttoned my jeans while admiring Aya's back. Her long, straight hair was tied in a ponytail, revealing her neck and back. Her legs, clad in white socks, were visible beneath her short, knee-length miniskirt; her fair skin made my heart flutter. Aya took off her sweater, folded it neatly, and placed it on the table. I took off my shirt and continued to admire her body. She slowly pulled off her long-sleeved top, and I saw the beautiful lines of her back. I subconsciously swallowed – I wanted to devour her. I'd seen countless beautiful women undress for me, but seeing her back gave me a surge of desire. But her breasts were unusually small… probably a little smaller than an A cup (what does "a little smaller than an A cup" mean??).

She wasn't wearing a bra, only a small tank top, and I could vaguely see her pink nipples peeking out from under the fabric. Aya had barely taken off her bra when I immediately kissed her on the lips. I reached behind her with my right hand, pressing our bodies close together, and supported her head with my left, letting me kiss her lips passionately.

I originally wanted to start with oral sex. But I didn't want to indirectly kiss my own penis, so I decided to kiss her first. She was a little resistant at first, probably because she was scared; her tongue was shy and didn't dare to respond to mine. I felt her rapid breathing, her hands gently resting on my shoulders, looking stiff and tense. My left hand moved to hold her waist, and I slowly spun her around like dancing. I gently licked her teeth; they were very neat, almost like corn kernels. But she resisted the kiss, trying to push my tongue out with her own, but I took the opportunity to suck her tongue into my mouth. I felt our tongues swirling between us, a little saliva slowly dripping from the corner of her mouth.

I began my advance, my hands moving down from her waist, touching her buttocks. I lifted her skirt, my fingers feeling the smooth texture of her thighs, sliding inside her thighs, quickly finding her panties. We temporarily separated our mouths, and I squatted down to take off her panties. Unexpectedly, she squeezed her legs together, preventing me from taking them off.

"Don't rush me, okay? I want to take my time taking off my clothes," she said, slightly out of breath and blushing.

"Alright! Let's start with oral sex!" I said, leaning against the table and pointing to my swollen waistband.

After seeing her undress, I already had the urge to pounce on her. Seeing her clumsy tongue technique just now only made me want to possess her even more.

She blushed as she took off my underwear, and my impulsive penis immediately appeared in front of her.

She seemed to be intimidated by the imposing presence of my penis, her mouth slightly open, her eyes fixed on my shaft.

"What? Never seen a dick before?" I teased her deliberately.

"No... I've never seen one this big..." Tsk! So she wasn't a virgin.

"Then start serving me!" I grabbed her head and pressed my penis against her mouth. Since she wasn't a virgin, there was no need for me to be gentle with her.

She took my glans into her mouth, licking the circumference with her tongue. After my penis was fully erect, she started using it like a toothbrush to brush her teeth. She looked innocent on the outside, but she was a slut at heart. She knew exactly where a man's erogenous zones were. I placed my hand on the back of her head and forcefully pushed her head forward, while simultaneously plunging my penis deep into her throat. This feeling was the ultimate in oral sex, but Aya didn't seem to enjoy it. She pushed against my thighs, trying to pull my penis out.

I released her head, and she spat out my penis, slowly licking the sensitive glans.

"Your technique is really good. Do you often give oral sex?" I asked.

"No, I rarely..." she vaguely brushed off my question, continuing to lick the glans.

My hands reached over her body, caressing her anus and vagina through her panties. As her panties became increasingly wet, her moans grew louder.

I initially wanted to explore with my fingers first, but considering she wasn't a virgin, I decided to reserve it for my penis to enter first.

I turned her over, had her hold onto the table, and easily pulled down her panties. This time, she didn't resist at all, making it easy for me to remove them.

I aimed my penis at her vulva and softly said,

"Let's begin!" Let's start from behind.

"Not using my fingers first? Ah!!!!" The saliva on my penis and her fully lubricated vagina made it easy for me to slide into her, but the feeling was incredibly pleasurable.

Only one word can describe it—tight!

Even though she wasn't a virgin, she was incredibly tight.

I pulled back slightly, thrusting my hips forward, and as I penetrated deeper, Aya's moans grew louder.

She actually came!

"Are you kidding me? You came as soon as I inserted it?" Damn it! I'll have to mop the floor now.

"It hurts... but it feels so good! My boyfriend never goes in this far!" "Don't get so excited so soon! There's still a third of it outside!" I said irritably.

"What!" Her eyes widened, and she reached back in disbelief. When she touched the remaining part of my penis outside, she gasped.

"No... no! It's so long... it... it'll break!" Aya cried out in panic, trying to kick me away with her legs. I lifted her onto the table, grabbed her hands in a few quick movements, and pressed my body against hers. This way, she couldn't resist me at all. I pressed her hands on the table, and the weight of my body allowed my penis to almost completely enter her body. As I went deeper, an indescribable pleasure swept over me, making me completely ignore her cries and continue to penetrate.

"Let me go! I'll give you back the money, okay? Don't do this! It'll break!" Aya shouted, her voice loud enough for anyone in the hallway to hear.

"I don't want to," I said gently, thrusting my penis into Aya's already wet vulva again.

Aya lay there crying sadly, and I slowly moved my hips, letting my penis slide in and out of her vulva, feeling it getting wetter and wetter. I stroked Aya's legs with both hands, noticing that one of her boots had fallen off during her earlier resistance, so I simply took off the other boot for her. I felt Aya's small feet encased in white stockings, and her shapely calves. I slowly stroked her smooth thighs, then moved down to her stomach. Aya's breathing was rapid, partly from nervousness, and partly from crying.

Although she wasn't a virgin, Aya's vulva was still narrow, and each time I pulled my penis out, I felt it close quickly. I noticed the piston-like movements were becoming smoother, and my penis was coated with a clear fluid.

Aya's crying subsided, replaced by wanton moans.

I caught my breath and picked Aya up; she seemed to have lost the strength to resist. I turned her over and made her lie face down on the table, her lower abdomen resting against the edge. I held my penis and rubbed the glans against her vulva. The slippery glans caused more lubricant to seep out, so I thrust hard, inserting half of my penis into Aya's tight, warm vagina.

"Mmm!" Aya couldn't help but let out a cry, which filled me with a sense of conquest. I repeated the piston-like movements, each thrust deep and forceful, my stomach slapping against Aya's buttocks, filling the room with the sounds of flesh colliding. My glans pushed all the way in, against the deep walls of Aya's vagina, each thrust seemingly unbearable for her. Each time, I inserted the entire penis, pressing my lower abdomen against her buttocks. The double stimulation made Aya unable to hold back her moans: "Ah... um... um..." Aya bit her fingers hard, as if afraid that her cries would be heard. Of course, I couldn't care less; even if the guard knocked on the door now, I would have a legitimate reason to be here. I watched my penis go in and out of Aya's vagina, the clear liquid gradually turning thick and milky white. I reached out and pinched Aya's nipples, pulling her up and making her stand in my arms. Her body swayed back and forth from my thrusts, and I raised her buttocks to further enjoy the tightness.

I really couldn't stand such a tight hole. I had tried my best to hold back, but under this stimulation, after only 20 minutes, I was already starting to feel the strain. I almost ejaculated several times when she suddenly clenched her muscles during orgasm.

"I'm going to cum! I'm about to cum!" I whispered to Aya.

"Don't ejaculate inside! It's my fertile period! No!" The fear of pregnancy made her try to break free from my penis, but as she felt my glans swelling with the urge to ejaculate, further filling her vagina, she unconsciously swayed her hips, hoping for more friction, even moaning,

"Shoot it in me...shoot it in me...hurry up and shoot it in me..." I pushed my glans all the way in and forcefully ejaculated into her body.

"Ah...hum...so much!So much!" she cried out loudly the moment I ejaculated.

My penis trembled inside her, and her vagina tightened continuously, as if trying to squeeze out every last drop of my semen. After ejaculating, I slowly pulled my penis out, and Aya seemed to collapse onto the table, exhausted. I looked at her slightly open vagina and realized something terrible.

"Aya...it didn't flow out..." I said nervously.

"What!" Aya jumped up abruptly, seemingly hoping the semen would flow out, but not a drop came out. Aya screamed in panic,

"What if I get pregnant?!" She even started crying.

"Let's go buy some morning-after pills later, I'll pay." Seeing her so anxious and short of money, I made this suggestion.

"What if I get pregnant... Waaah..." She cried and pounded on my chest, but it only awakened my lust. I don't know why, but seeing her crying, my little brother actually got hard.

"I have a way to get the semen out," I said maliciously.

"Wh...wh...what way?" Aya sobbed, completely unaware of my wicked intentions.

"Come on! Turn over!" Aya did as I said, turning over and exposing her white buttocks to my face.

I touched her genitals, smeared my index and middle fingers with her vaginal fluid, and then inserted my fingers into her pink anus.

"Ah! That's my anus! What are you doing?!" Aya nervously shook her buttocks.

"Squeeze! Stimulate my anus, make the semen flow out!" I said, making up a lie.

"Oh... okay... then be gentle..." Tch! She was so naive. I originally wanted to insert it directly, but when I saw her anus, I immediately knew that her chrysanthemum must still be a virgin. As I widened her back door, her vaginal fluid flowed out.

When it was wide enough to fit three fingers, I smeared her vaginal fluid on my glans, aimed the glans at her anus, and forcefully inserted it!

"Ah!! What are you doing? What are you doing?" Aya shouted in surprise, but unexpectedly, she didn't resist. It seemed that widening it was the right decision.

"Anal sex! Even if you haven't been anally penetrated, you've heard of it, right?" I said as I thrust in and out. "No! Mmm...mmm...it's so lewd...but it feels so good!" She seemed to be experiencing the pleasure of anal sex. No wonder she's an athletic girl; her anus feels different when I fuck her. Firm, tight, yet with the softness an anus should have. Even though I just ejaculated once, my glans started getting sensitive again, and I was about to ejaculate again! What a sexy little anus!

"Ahhhhh!! I...I...my anus feels so good! Anal sex feels so good!" Aya shouted these obscene words, which made me thrust even faster.

"Mmm...I'm going to climax! Ah..." With a high-pitched cry, Aya's anus tightened, and I couldn't resist the sudden stimulation, so I ejaculated as well.

"I...I...I came from behind...from my ass! I'm so lewd!" Aya's ass was sticking out, her anus still open from where I had just penetrated her, thick white semen flowing from it. Looking at this scene, I suddenly remembered something, but I couldn't remember what it was.

Aya fell asleep on the table. I had penetrated both her holes, so she must have been tired. I picked up a ziplock bag from the side and wiped the semen from her anus, then covered her with her clothes. After getting dressed myself, I leaned against the table, wanting to rest for a bit, but I ended up falling asleep.

There was a soft, rustling noise. I opened my eyes and saw Aya giving me oral sex!

"What are you doing?!" I exclaimed, startled.

"I want to eat semen!" Aya said with a smile.

"I was really hungry when I woke up, and then I saw a ziplock bag next to me with a bunch of sticky stuff inside. I didn't expect it to taste so good! So I tried to get some out to eat!" "That's from your butt, it's dirty!" I said to her in surprise. "So it tastes good because it comes from your butt? Hurry up and get some more for me to eat!" Aya said, holding my penis and acting coquettishly.

Just then, with a 'click,' the door opened. It was none other than my professor. She looked at the two of us, then looked up at the classroom number, seemingly to make sure she hadn't come to the wrong classroom.

I was about to explain when the professor spoke.

"You guys continue, call me when you're done." After the teacher closed the door, I stared dejectedly at the ceiling, while Aya continued to give me oral sex with great enthusiasm.

As expected! My presentation was a complete disaster. The professor was clearly very concerned. Aya threatened me afterwards, saying that if I didn't continue to suck her semen, she would tell my girlfriend everything.

This time, the price for this escort service was really high!

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