"There is a major exam coming up next week. Everyone, make sure to manage your time well and study hard. It’s exhausting to have to retake a course if you fail," the professor announced.

*Oh heavens!* As soon as the words left his lips, a sense of dread washed over me. I had spent the last few months wandering around everywhere with my boyfriend, barely opening a single book. While my grades had been decent in class, I had played far too hard this time. I was in trouble; I would have to cram intensely over the next few weeks.

So, the grind began. Whenever I hit a wall, I would ask the professor, my teachers, classmates, or friends for help. I stayed at school until late every single evening. Of course, with so many subjects to cover, it was hard to keep up the stamina. By six or seven in the evening, my eyes were blurring with fatigue. I decided to pack up my things and head home.

As I walked wearily down the corridor, passing the chemistry lab, a thought struck me. *Wait...*

"That's strange. The professor should have gone home by now," I murmured to myself, pausing in my tracks.

The lights in the lab were still on. As I stepped closer, the sound of voices drifted through the air—men and women talking. At first, it sounded odd, but as I drew nearer, the conversation transformed into the unmistakable sounds of carnal union. Rhythmic moans and the wet, heavy sound of skin slapping against skin echoed in my ears.

"Professor! It feels so good... ahh! Mmm... ahh!" The woman's moans were as wanton and lewd as my own. *Heavens... who could it be?* I pressed my face against the glass window of the lab door to peek inside... It was Sarah! She was having sex with Professor King.

Sarah was usually so well-behaved and sweet, with a lovely, curvaceous figure. But I couldn't wrap my head around it—how could she be passionatley fucking this skin-and-bones, age-spotted old professor? Was she being threatened? Or perhaps coerced?

Just as I was considering stepping in to "rescue" her, a scandalous sentence reached my ears. Sarah cried out in a high-pitched, coquettish tone:

"Professor... mmm... ahh... you have to let me pass chemistry... ahh!! It feels so good..." she gasped, breathless with pleasure.

"Hehe... of course... as long as you keep me satisfied... of course you'll pass..." the professor replied, panting like a bull as he hammered away inside her.

So, Sarah was trading her body for grades. She was selling herself for academic success. To most, it might seem shameless or even lowly, but to me, it felt incredibly exciting. A sudden, inexplicable surge of arousal rushed through me. Quietly and cautiously, I slipped away from the school.

That night, sleep was impossible. My mind was a whirlwind of professors and grades. Suddenly, a bold thought struck me: *Why don't I just go to the professor too? That way, I won't have to worry about passing this class.*

As the exam dates drew closer, my preparations were almost complete, save for chemistry. While lost in thought, I saw Sarah walking into the classroom. She looked jubilant, yet utterly exhausted; the moment she sat down, she fell fast asleep.

I decided then and there to secure my passing grade by seducing the professor. A few days later, after my chemistry lecture ended, I rushed forward to intercept him. I began asking him questions about the material, and as he kindly explained the concepts, I deliberately began unbuttoning my blouse, revealing a deep, inviting cleavage for him to feast his eyes upon.

It worked perfectly. While "asking questions," the professor couldn't take his eyes off my breasts. I intentionally slowed my movements, giving him plenty of time to stare, and leaned in close to him. The temptation was palpable; I could see his manhood swelling beneath his trousers. *Hehe, this is fun,* I thought to myself.

Once we finished, our eyes met—his burning with lust—and I made a quick exit. My heart was pounding wildly. *The seduction was a success!* Feeling confident, I went out to party all night with my boyfriend. A few days later, after class, the professor called me over. He told me to meet him in the lab after school. I knew exactly what he wanted: my flesh.

When school let out, I headed to the lab with a heart racing from nervous excitement. The professor was busy tinkering with an experiment when he spoke.

"Chloe, you've been playing quite hard lately. Your grades are slipping. If this continues, I might have to fail you," he said.

He maintained a stern facade, but his eyes betrayed his true intent: he wanted to use his authority to claim my body.

I feigned anxiety, acting quite nervous. "I'm so sorry, Professor... I'll work harder. Please don't fail me!" I played the part of the pitiable student to win his sympathy.

The professor walked toward me with a lecherous grin. "As long as you perform well, naturally, I will give you the extra credit you need to pass~"

"My performance?" I asked, playing dumb. "But I've turned in all my assignments and attended every lecture!" I said, shrinking my body slightly.

The professor wrapped his arms around my waist. "But those things aren't enough. What I need is your *current* performance." His rough, aged hands began to caress my body.

"Professor... no, you can't do this..." Playing the part of the modest maiden, I tried to push him away. He immediately turned to threats, telling me that if I didn't comply, he would fail me—and he didn't much care either way.

So, I surrendered. I let him ravage me. His calloused hands wandered over my uniform, sending waves of pleasure rushing through my core. I suppressed my moans, letting out only soft, whimpering sighs.

He unbuttoned my clothes one by one until my uniform was cast aside. He reached under my bra, his hands squeezing my heavy breasts with force.

"You little slut!" the professor growled in excitement. "Using these massive tits to seduce me? You really do have the biggest breasts in the class. They feel so much better than Sarah's!"

"Professor... you're so bad... you even slept with Sarah... ahh!" I gasped.

"Haha! You little sluts are all here to be fucked by me! If you don't listen, you fail. It's not like your grades were that good anyway!"

The professor finally showed his true colors. He might have looked like a kind, elderly gentleman in class, but in reality, he was nothing but a lecherous old man. But what could a girl do? For the sake of her grades, she had to endure.

He used his fingers to pinch and pull at my nipples, tugging them until they were hard and aching. With his other hand, he slid my skirt down and reached into my panties to massage my swollen petals. Before long, my body was burning hot, and my juices were flowing like a flood.

He hoisted me up onto the lab table and spread my legs wide. He leaned in, his head pressing between my thighs, and began to lick my slit with his tongue. His technique was incredible; a torrent of cream erupted from me. His face was soon covered in my sweet nectar.

"Professor... mmm... ohhh... it feels so good... the way you lick... mmm... I can't take it... I'm going to come! Ahhh!" My body shuddered violently.

As I climaxed all over his face, he licked his lips with a wicked grin. He stripped off his trousers and pulled out his old rod. To my surprise, it was much thicker than it had looked through the door crack. It was massive, a stark contrast to his frail frame. Seeing it, my instincts took over, and I began to lick him.

"Good girl! A truly good student," he praised. "Hurry now, suck it so you can make me feel good." Under his commanding presence, I became like a submissive little kitten, serving him.

My tongue work was excellent. Before long, the professor let out a groan as he shot a thick, heavy load of semen into my mouth.

"Ahhh! So much... so much!" I cried out. My face, my breasts, and even my hair were splattered with his essence. Who knew the old man had such stamina?

Without a word, the professor lifted me up and thrust himself inside! *Good heavens... he got hard so fast!* He was thick and heavy, filling me completely. Despite his age, he was a force of nature.

"Ugh!!! It's so big!! Ahhh! Ohhh! Professor!! It feels amazing!" He hit my cervix, beginning a relentless, rhythmic pounding.

"Haa... haa... finally, I've got you! You big-breasted brat... seeing those tits bouncing around every day made me want to bite them!" He leaned down and began to gnaw on my right breast.

In truth, he had always lusted after me, but because I looked so pure, he hadn't dared to touch me. Now that I had delivered myself to him on a silver platter, his lechery was unleashed.

"Ahhh!! Ohhh!! Ohhh!!! It's so good!! It feels so wonderful!! Darling... ahh!"

My moans were just as loud as Sarah's. The professor panted, praising my vocalizations.

"You sure know how to scream, don't you? Such a slutty sound... scream for your Daddy!" he commanded, treating me like a well-trained girl. In that moment, my physical pleasure completely stripped away my remaining dignity.

"Daddy!! Oh, Daddy, fuck me harder! Use your big cock on your daughter! Fuck her little slit, ahh!! Ohhh!" My filthy words only served to make him accelerate his pace.

"Ahhh... ohhh... mmm... so good... so wonderful... your big cock... it's hitting so deep... ahh!! My womb is being pounded... I'm going to die... ohhh... no more!"

The professor collapsed against me, his thrusts becoming frantic and violent. He let out a low, guttural groan.

"Ah! I'm coming! I'm going to fill you to death! Ahh!" He pulled out at the last second and aimed at my breasts, erupting in wave after wave of hot semen. When he finally finished, he lay there panting like a beast. I sat up, dipped a finger into the leftover cream, and tasted it before looking at him with a playful pout.

"Professor~ my grade is all in your hands now~" I teased, tidying myself up before mischievously slipping out.

When the grades were posted, sure enough, I had passed. Now, I could go back to playing carefree... until the next exam.

*Oh no! The next one is coming and I haven't prepared!* Then, the thought of the professor drifted back into my mind.

Like a little devil, I returned to the lab, looking at the old man with a naughty glint in my eye.

"Professor~~ help a girl get some extra credit!"

And so, in the twilight of the school day, the sounds of wanton moaning drifted from the chemistry lab once again, lasting well into the night.