Educating Nikki
written by:
Nalyd

"Please Monica, you know you're over reacting!" Paul exclaimed into his mobile phone.

Outside the cafeteria it was a beautiful summer day; nice and warm, but not too hot.

"Of course I like your parents, but we did see them two weeks ago..."

Like most Friday lunchtimes, the place was packed. There were no classes in the afternoon, and everybody was looking for a snack or just hanging out before starting the weekend in earnest. In a couple of hours the campus would be deserted, but for now it was a bustle of activity.

"Now really, your mother is absolutely enchanting!"

Paul found himself sitting alone at a small table close to the food court. Although there was an empty seat next to him, his heated exchange was driving away any potential partners.

"Me sarcastic!? Now what gives you that idea!? I tell you what; I don't want to fight over the phone. Enjoy the weekend at your parents, and let's discuss this when..."

Suddenly he stared at the phone

"Goodbye to you too, bitch." he told the dead receiver "Can't fucking believe she just did that!"

They've been seeing each other for about six months, and were at an uncomfortable stage in the relationship. If it continued for much longer it would get serious, but neither of them seemed quite ready for that. Paul really liked her and the sex was satisfying; the only problem was the getting serious bit. And her mother, of course. Monica absolutely adored her mother. Her parents lived close by, and she used to visit them every weekend. Since Paul appeared on the scene, the visits were compromised to every fortnight - a fact that was resented by the mother, and it was starting to affect Monica as well.

"Well, that's me to myself for the weekend" Paul muttered.

Actually, he was looking forward to spending some quality time with himself, and maybe catching up with some friends he'd been neglecting lately. Just then he noticed a girl entering the cafeteria. Pretty girls were a common occurrence on campus, and they liked to show off in weather like this. Lovely summer dresses, miniskirts and revealing tops were the order of the day. For Paul, this all blended into everyday campus live - he still took notice, but it was almost part of the scenery.

This girl, however, deserved a second look. She was quite tall; with long, wavy blonde hair cupping a pretty face. She was wearing a white tank top with a matching little miniskirt, which showed off her fantastic body. The top exposed her flat tummy and clung to a pair of lovely breasts, while the tiny skirt displayed her long, shapely legs. But it was her attitude that really caught Paul's attention, along with every other male in the cafeteria - and some females! The girl was oozing sex appeal; she knew it, and she loved the attention. Confidently she gazed around the room, briefly catching Paul's eye. His mouth went dry as she flashed him a quick smile, and then she disappeared into the food court.

Although a bit reserved, Paul was reasonably confident around girls. He was quite good looking - slender but not skinny, talkative and witty. However, he was not the type who played the field, and as a rule he stayed faithful in relationships. But he saw nothing wrong with a bit of staring, imagining and flirting. So he kept an eye on the food court for another glimpse of the girl. After a couple of minutes he was rewarded - she appeared looking slightly uncomfortable, carrying a food tray and some books at the same time. On an impulse, Paul acted.

"Can I help you with that?"

For a second he thought she would turn him down. Green eyes scanned him, evaluated him, and then she smiled.

"My hero!"

"It just so happens that I kept a seat for you" said Paul as he helped her with the books - mathematics by the looks of it.

"And here I thought people were avoiding you! Thought you might be a bit smelly or something" the girl smiled.

"Well, that's one of the perks of taking regular weekly baths - a table all to yourself!" Paul played along, and this time he was rewarded with a laugh.

"You're funny! Different from the mean, manly hunks a girl has to deal with every day"

"Well, if you're not mean or manly, I suppose funny is the next best thing" said Paul and she laughed again.

"By the way, I'm Paul" he introduced himself while holding the chair for her.

"A gentleman as well" she said "My name is Nicole, but my friends call me Nikki"

"A pleasure madam, but what should I call you?" he said with mock seriousness.

"You're my hero - you can call me anything you like" said Nikki as she sat down.

Up close Paul could see that she was even younger than his first impression; about nineteen, and absolutely drop-dead gorgeous.

"Those are pretty heavy books to be carrying all over campus - and pretty heavy reading too" said Paul as he picked up a book from the pile.

"Yeah, maths - my favorite subject" Nikki pulled a face.

"So what are you studying? I had maths until my third year" Paul asked while idly paging through the book.

"Economics, first year. But I'm really struggling with this stuff. Luckily the lecturer is helping me with some extra lessons." the girl answered.

"Is it helping?" Paul returned the book to the pile.

"Not really, I don't think we're on the same wavelength. Maybe I need a new math tutor - you don't happen to know one?"

"Can't think of someone - I didn't use one myself" Paul replied.

"You must be really good at it" Nikki's face suddenly brightened "Hey, but then you could help me!"

"Huh ... oh yeah ... sure" Paul replied, caught off guard.

Nikki apologized immediately "I'm sorry to put you on the spot like that; you really don't have to. But it won't take a lot of your time..."

Actually, Paul could think of nothing he'd rather do than spend a couple of hours with this beauty. Looking into those large, green, pleading eyes his heart skipped a beat.

"No, no, don't stress. I was just taken by surprise, that's all. I'll be delighted to help you"

"Oh thank you, thank you, thank you! Now you really are my hero!"

Very excited, Nikki leaned over and gave him a big hug. Paul was stunned by her presence - the smell of her hair, the soft breasts against his chest... Eventually he found his tongue as Nikki disengaged.

"Hey, calm down. I can't promise it will do any good"

"Oh nonsense, it will be great! At least you will be a lot more fun than my stuffy old teacher" Nikki was still excited.

Paul smiled at her obvious delight "Well I don't know about the stuffy, but I'm definitely not old!"

She laughed again, and then they were chatting like old friends. Nikki was clever, witty and flirty. She was also the touchy type, and liked putting her hand on his arm or leg during the conversation - seemingly oblivious of the effect it was having on him. He also couldn't stop himself from stealing glances at her hot, scantily clothed body. He completely forgot about his fight with Monica, and pretty much about Monica as well! As time flew by the cafeteria started to run empty, and then Nikki was gathering her things. Suddenly Paul was afraid that he would never see her again.

"So, were you serious about the tutoring thing?" he asked, figuring it was his best chance of getting her number.

"No, I was only making conversation" Nikki laughed at the look on his face. "Of course I was serious, silly. Did I not look seriously happy?"

"Yeah, but I was worried that an hour in my company might change your mind" Paul played modest.

"Oh please. I had a great time and you know it" said Nikki as she placed her hand on his leg again.

"Thanks, I really enjoyed myself too" Paul replied, very conscience of her touch.

"Well, are you ready?" said Nikki as she got up.

"Ready for what?"

"For the math lesson - you still want to help me, right?"

"Now? I thought... where..." Paul stuttered.

"Well, I'm writing a test on Monday, and I don't have any plans for this afternoon. But if you can't that's ok" Nikki looked a bit sad.

"No, no, I'm fine. Where do you want to go?" Paul answered quickly.

"I'm sure we can find an empty classroom somewhere" said Nikki with a twinkle in her eyes.

Paul felt little butterflies fluttering around his stomach - just the thought of being alone with her.... As he got up, Nikki took his hand and together they left the cafeteria. He was feeling excited and confused at the same time - on the one hand he was really getting turned on by the flirting, but then again, it might just be her way. He decided to play along and see what happened.

"The engineering building is quite close, would that be ok?" Paul asked

"Sounds great - lead the way" Nikki answered.

They did not speak much along the way - Nikki seemed deep in thought and Paul just enjoyed her closeness. After a couple of minutes they reached the engineering faculty, where he had his lectures earlier. Usually it was full of people, so it felt a bit strange to enter the deserted building. With their footsteps echoing down the passageways, Paul led her to one of his classrooms.

"After you, my lady" he said while opening the door for her.

"A gentleman to the end" Nikki smiled.

The room was set up like an amphitheater, with the seats and desks in descending rows, and a lecturing podium with a big desk in the front of the classroom. After scanning the place, Nikki selected a seat about halfway down.

"So, what seems to be the problem?" Paul asked as she reached for a book.

"Mathematics, pretty much!" Nikki seemed a bit embarrassed.

"Don't worry, let me have a look" Paul flipped the book open. "But isn't this school stuff?"

"Well, I didn't have maths in school, and I'm doing a bridging course" Nikki explained.

"And the lecturer is helping you after class? That's pretty unusual you know. You must have flirted him into submission!" Paul smiled.

"It's not a him, it's a her - so don't be jealous. And I don't flirt!"

"Oh come on, you flirt too! And I'm not jealous!"

"Now what did I do that you might consider flirting, Paul?" Nikki asked innocently.

"Ohhh, I don't know... The outfit, THAT!" Paul exclaimed as she put her hand on his leg again.

Nikki giggled "I'm just a touchy type of girl I guess. But you can't complain - you've been flirting with me from the start!"

"I've done nothing of the sort" now it was Paul's turn to act innocent "For instance; I'm not the one touching your leg"

"Do you want to?" Nikki opened her legs ever so slightly, and then laughed at the look on his face. "Listen Paul, you don't have to touch to be flirty. You play the gentleman, you make me laugh - that's flirting!"

Paul suddenly realized that she was not wearing a bra - her nipples were clearly etched against her tight tank top. He also realized that he was staring, and tried to justify his wandering eyes.

"And the outfit? Surely you must be aware of the effect it has on men?" was the best he could come up with.

"This little thing? I didn't think people would notice!" said Nikki dismissively.

"I think that's the point. People hardly notice the outfit!" Paul laughed.

"So what do they notice, Paul?" Nikki asked coyly.

Paul actually blushed, at a loss for words.

Nikki giggled "Jeez you're cute when you're blushing!"

"If that's the price I have to pay to be considered cute..." Paul regained some composure.

"Don't pretend - you know you are. And by the way, you haven't answered my question yet" said Nikki.

"What do I know? What question?" Paul asked, slightly confused.

"You know you are cute, and do you want to touch my leg?" Nikki answered with a naughty smile.

Once again Paul was caught off guard "Sure ... I mean, not about being cute ... sure about the touching thing"

"So?" Nikki turned to face him.

Looking into her eyes, Paul acted on an impulse and quickly kissed her. Her lips were full and soft, and she opened them slightly in response. Moving closer, Paul placed his hand on her leg. Just then Nikki broke away, smiling at him.

"Finally! I thought I had to do everything!"

"Not quite" Paul replied, a bit embarrassed.

His head was spinning and his heart was thumping in his chest. From her flushed cheeks and heaving breasts, he could see that Nikki was feeling the same way. Then she placed one hand behind his head, and pulled him closer for another kiss. This time there was less tenderness and more passion - as soon as their lips met her tongue entered his mouth. Hungrily they kissed, their tongues darting while their breathing became faster and faster. Paul still had his hand on her leg, lightly stroking her smooth, soft skin; slowly moving his hand higher to the hem of her skirt. In response Nikki opened her legs a fraction wider. Without a second thought Paul slipped his hand under her skirt, his fingers tracing little circles on the inside of her thigh. Nikki gave a little moan, and then she broke free again.

"Want to hear a secret?" she asked, out of breath.

Paul just nodded.

"I'm not wearing any underwear"

Paul's mouth went dry, his imagination working overtime. Then he found his voice.

"Really?" it sounded lame even to him.

Nikki just stared at him, daring him, trembling with anticipation while his fingers teased inches away. Finally she had enough.

"Do it already ... FUCK!" she gasped as he touched her at last.

She was not lying - under the skirt she was very naked; and very wet as well! Her gasp turned to little moans as he lightly caressed her clit. Once again his mouth searched for hers, but this time there was no hint of tenderness. With their tongues entangled, Paul slipped his free hand under her top. Her breasts felt perfect - just large enough to fill his hand, velvety soft but also very firm. Nikki squealed as he rolled a nipple between his fingers. Then, without warning, he plunged two fingers into her pussy.

"Oh My God!!!" she cried and lifted herself from the chair.

He was slowly moving his hand, slipping his fingers in and out of her soaking wet hole. With his other hand he lifted her tank-top, letting her breasts bounce free. They were absolutely magnificent - pert, full and natural, somewhere between a B and C-cup. Small pink nipples were riding high and very erect. Almost reverently he bowed down to take one into his mouth. By now Nikki was moving her hips, fucking his hand faster and faster while he was suckling and nibbling on the hard, tender nipple. Her eyes were closed and she was gasping and moaning with pleasure.

"Shhh, softly" Paul whispered.

"I'll ... try" Nikki barely got the words out.

Then she stiffened and threw back her head with a strangled cry as the climax hit her. Paul covered her mouth with a kiss to dampen the noise while rapidly finger-fucking her. On and on her orgasm went, seeming to last longer than the foreplay, rolling over her in wave upon wave. Her body tensed, trembled and shook, and she was screaming into his mouth before she gradually relaxed. Completely out of breath, Nikki just leaned against him. Then she sighed.

"Fuck, I needed that"

"You're a horny little thing, miss no underwear!" Paul smiled at her.

"You have no idea!" Nikki smiled right back.

"No idea what?" Paul played along.

"No idea how horny I am! All day I've been walking around campus half naked. Just imagine - every second guy wanting me, while I'm ready, wet and willing"

"Jeez, you are wild - were you also wet while we were chatting earlier?"

"I nearly slid from the chair! I swear Paul, you almost had me cumming right there in the cafeteria with your flirting"

"I don't flirt" Paul laughed.

"Yeah sure, we've established that - but what can I say? I suppose some people would call me a slut, but I love it!"

"Proof it" was his reply.

"You need more proof? OK, let's find some space and I'll show you"

With that Nikki got up, took him by the hand and led him to the front of the classroom. Paul had a massive erection, and walking was a bit of a painful exercise. Nikki noticed his discomfort.

"You poor baby. Have a seat and let me have a look at that" she pulled the lecturer's chair from the desk.

Gratefully Paul slumped down while she knelt in front of him, her exposed breasts pressing against his legs. Slowly and expertly she opened his pants.

"Did I mention that I love blow jobs?" she asked with a naughty smile.

"Me too - receiving them, not giving them!" Paul laughed

"Obviously... Oh nice!" she exclaimed as his erection popped free.

He was slightly larger than average and as hard as a rock. Tentatively Nikki reached out, lightly touching his balls with a long, red fingernail. Paul gasped; his breathing was coming quick and fast in anticipation. Nikki was slowly running a sharp nail up and down his scrotum, and then she gave the tip of his penis a little flick with her tongue. She smiled at Paul's reaction, and gave another little lick. Then another, and another, and pretty soon she was rapidly licking his head while her finger continued its exquisite path across his balls. Paul was gasping and groaning, both his hands gripping the sides of the chair. Next Nikki's tongue began moving down his shaft. Upon reaching his balls, she took one into her mouth and sucked on it while squeezing his dick with her free hand. Paul did his utmost not to explode right there, trying to prolong the pleasure for as long as possible

"Slowly ... please" he gasped.

"What's the matter, can't handle it?" Nikki teased

Suddenly Paul heard a noise. He looked up and to his horror he saw the classroom door opening.

"Oh fuck, someone's here" he whispered urgently.

Frantically he shoved Nikki under the desk. Luckily it was closed to the front, so whoever was entering couldn't see her. He then scrambled the chair forward to cover his lower body under the desk as well. Finally he tried to pull up his pants, but with dismay he realized that Nikki had grabbed hold of them and refused to let go. He ducked beneath the desk.

"Please, please, please don't fuck around!" he implored.

Nikki just smiled, leaned forward and gave the tip of his penis another little lick.

"Who's there?" a voice called.

A voice Paul knew all too well. In fact, he listened to that same voice early in the day, explaining the intricacies of applied thermodynamics.

"Professor Peters, it me" he emerged from beneath the desk.

"Mr. Lombard? What on earth are you doing here?"

The guy wasn't too bad - for a teacher, of course - a bit distracted but basically good at heart. However, Paul seriously doubted whether he would approve of what was happening here. Already he could imagine all kinds of inquiries and disciplinary hearings. Involuntarily he moved his lower body further beneath the desk.

"Just touching up on some ... ahhggg" Paul nearly choked as Nikki took a firm grip on his cock.

"Are you alright Mister Lombard?"

Peters had reached the bottom step, and was walking towards the desk.

"Uh ... I'm fine sir ... oh ... just a bit of cramp ... SHI..." Paul almost doubled up - Nikki had placed her lips over the head of his penis.

"It looks serious, Mr. Lombard. I think you better go to see a doctor."

He had reached the desk and was examining Paul, looking concerned. In his hurry to take cover, Paul had grabbed one of the books lying on the desk. It just happened to be a dictionary. He just prayed that Peters didn't take a closer look at his study material!

"Do you want me to take you to a doctor?" Peters asked.

"No thanks, sir. I'm sure it will pass in a minute."

His dick was now halfway into Nikki's mouth. She wasn't providing any stimulation, just very slowly lowering her head, taking in more and more. Despite the awkward situation, Paul was savoring the warmth and wetness around his penis.

"But why are you still here, Mr. Lombard? I'm about to lock up" said Peters.

"Just catching up on some work, sir" Paul replied.

Just then Nikki started fucking him with her mouth. Her head was bobbing up and down, and every time she pulled back she bit down ever so slightly, producing delicious ripples of pleasure where her teeth softly grazed his sensitive skin. Although the rhythm was slow, Paul could feel the pressure in his balls rising. With every shred of self-control he fought against the feeling.

"I commend you on your diligence, Mr. Lombard, but why here?"

"It's ... nice ... and ... quiet ... sir"

Paul was struggling. Nikki had grabbed hold of his balls, and she was squeezing them every time she lifted her head.

"Well, Mr. Lombard, I'm on my way home and was about to lock the class. Would you be so kind to do it for me when you are done?" he took a bunch of keys from his pocket.

Paul had no idea they locked the classrooms. He just nodded as Peters fumbled for the correct key.

Nikki had stopped completely, his dick still in her mouth. Paul just began to relax as he realized that Peters was about to leave. Suddenly Nikki SUCKED - as hard as she could - while squeezing his balls with her free hand.

"FU..." Paul almost doubled up.

The pressure was relentless, and he felt himself losing control.

"Mr. Lombard, I insist that you go and see a doctor today" said Peters while struggling with a key.

"Will ... do ... sir" Paul answered through clenched teeth.

Nikki was sucking hard and her mouth was moving rapidly up and down his cock. Under this intense attack Paul finally lost the fight. He felt the orgasm starting just as Peters' managed to get the key off. However, as he was about to cum Nikki gripped down hard on his balls, applying pressure on the bit where his shaft and scrotum connected. To his horror Paul realized that he couldn't release. His eyes almost popped from his head and it felt like he was busy exploding. He'd never experienced anything like this in his life before - intense spasms of pleasure and pain as Nikki was sucking on him with everything she got, while the grip on his balls refused to relent - denying his body the release it was craving.

"Well, I'm off - please see a doctor and remember to lock up" Peters started ascending the stairs.

Paul's mind had gone blank. He just slumped in the chair as pain and pleasure fought for control over his body.

"Good bye, Mr. Lombard" said Peters as he left the room.

As soon as the door closed, Nikki finally released her grip on his balls. Paul came immediately; releasing a torrent of cum into Nikki's warm, waiting mouth. She was swallowing as fast as she could, but still struggled to keep up. Even as cum was leaking from the corners of her mouth, she was squeezing his balls to milk him for every last drop. At last his orgasm abated, and Paul just slouched in the chair as Nikki emerged from beneath the desk. She looked a hell of a sight - out of breath, hair all over the place, face flushed and cum dripping down her chin onto her naked breasts.

"And how did that feel?" she grinned as she licked the cum from her lips.

"You fucking bitch - you could have killed me! Or get me expelled! Or both!"

"They can't expel you when you're dead, silly! But tell me that wasn't the best blow job you've ever had"

Paul knew she was right, although he wasn't sure whether he should thank her or kill her.

"Ahhh relax, don't look so cross - the real fun is only just starting!" Nikki giggled, and then frowned as she had a thought.

"You are up for another round, I hope?" she sounded concerned.

"Well, I'm still undecided - maybe I should really go and see a doctor"

"Will it help if I ask nicely?"

Nikki stood up and turned her back on him. Then she slowly spread her legs and bent over the desk. With one hand she reached back and lifted her skirt. Paul was staring at her lovely ass and her naked, soaking wet pussy.

"Please Paul, before you go to see a doctor, I want you to stick that big cock of yours into me and fuck my brains out"

Paul could feel that big cock stirring again.

"Since you're asking nicely... But we need to lock the door - I don't want any more nasty surprises"

"Ok, you big baby, let me do it while you recover"

Within seconds the door was locked and Nikki approached him again. In one smooth motion she pulled the tank-top over her head, and then she stepped out of the miniskirt. Completely naked but for her sneakers, she came to a halt in front of him.

"You like?" she asked, almost shyly.

Paul was staring, his mouth half open. She was a vision of youthful beauty - tall and slim with amazing curves. Her teenage pussy was clean-shaven, and he could see the wetness on the inside of her thighs. He was as hard as a rock again, and more than ready to fuck her brains out.

"God you beautiful..." he whispered.

Still sitting in the chair, he reached up tentatively and ran his hands over her breasts.

"Mmmmm" Nikki sighed and arched her back.

Then she leaned forward to search for his lips again. They started a slow, deep, sensual kiss, while his hands fondled her breasts. Eventually she broke away, her face flushed and chest heaving. Pausing only for a second, she stepped forward and positioned herself over him. Grabbing his penis in one hand, Nikki slowly lowered herself until the tip was pressing against her pussy. She stood like that for a moment, building the excitement, and then she impaled herself upon him.

"Fuck!" she grunted as he penetrated her all the way to the hilt.

She was warm and tight and very wet, and Paul savored the sensation as he filled her pussy completely. Her eyes were closed and she was moaning softly. Then she lifted her lower body, until just the tip of his cock was inside her, before slowly sinking down again. Paul had a perfect view of her lovely tits just inches away from his face. Impulsively he took a hard, pink nipple into his mouth, teasing it with his tongue while biting down softly. As Nikki raised herself again, his teeth grazed the sensitive flesh.

"Aggghhhhhhh!" she squealed, and immediately picked up the pace.

Faster and faster she went, slamming herself down on his dick. It was clear that she was not going to last long; the twin assault on her nipple and pussy was driving her to another orgasm. She was also becoming louder and louder, grunting and moaning while fucking him as hard as she could. If Paul was thinking clearly he might have worried about the noise, but he was beyond caring. He was just hanging onto her hips for dear live, while trying to keep her nipple in his mouth. Suddenly Nikki's body stiffened and she threw back her head.

"Gmmmahhhh - oh my god - I'm coming - Ahhhmmmgggmmm - Fuck!!!!" she cried and lost control.

Paul was praying hard that the chair held - she was practically jumping on top of him and screaming the roof off. After what felt like several minutes, her orgasm finally subsided. Spent for the moment, she sat down on his lap, his hard dick still inside her. Then she looked into his eyes, smiled and said one word:

"Again."

"Of course" he smiled back at her "do you like it from behind?"

"Fuck yeah, I love doggy" said Nikki as she got up, spread her legs and bend over the desk.

Paul didn't need a second invitation - in a flash he had positioned himself behind her, guiding his penis into her wet pussy. Grabbing hold of her hips he started fucking her slowly. Within seconds her breath was coming fast again, rasping in the back of her throat. Reaching around with one hand he traced a path over her flat belly, searching for her pussy.

"Oh yeah, right there, right there... Fuck, that's good!" Nikki moaned as his hand found her clit.

She stretched forward and grabbed hold of the other side of the desk, her grunts and moans echoing around the empty room while he fucked her with wild abandon. He had a fantastic view - a beautiful girl draped across the desk with her ass sticking in the air, and his cock balls deep into her pussy. Tentatively he reached out with his free hand, running it over her beautiful behind. As his finger lightly brushed over her asshole, Nikki went absolutely wild. Encourage by her reaction, Paul licked his middle finger for lubrication, then slipped it into her ass.

"FUUUUUCK!!!!" Nikki screamed and came immediately.

Paul was massaging her clit with one hand while fingering her ass with the other. This was all too much for Nikki, and another climax was upon her before the first had finished. And then another. When the wave of orgasms had finally receded, she looked around

"Enough teasing, do it properly now" she panted, faced flushed and out of breath.

"What do you mean" Paul asked.

"I want you to pound my ass, of course! There's some lube in my bag - I'm ready when you are" Nikki didn't mince words as she bend over the desk again.

Quick as a flash Paul was applying the clear jelly to her pink little hole. Once again Nikki's reaction was immediate, but she was in no mood for teasing.

"Enough fucking around, get on with it!" she ordered.

Paul was only too happy to oblige. Gripping her hips with both hands, he pressed the tip of his cock against her sphincter.

"Slowly now, not too fast" Nikki squealed as he started to apply pressure.

For a second Paul thought he would not be able to enter, but then she opened up and his penis was inside her. He couldn't believe how tight she was - it felt like he was fucking a vice-grip. Slowly and deliberately he pushed forward, entering deeper and deeper into her ass. All of a sudden Nikki started rubbing her clit vigorously. Paul could see tiny little goose bumps spreading from her ass, moments before she came again. This time the reaction was not as violent as before, her body just stiffened and she whimpered while pleasure coursed through her. Without pausing, she began moving back and forth. With his hands still on her hips, Paul matched her rhythm, penetrating ever deeper into her ass. The tightness enveloped his penis right along the shaft, amplifying the sensation beyond believe.

"Fuck my ass. Fuck it harder. Fuck! It! Harder!" by now Nikki was screaming orders to him.

Paul obliged, and she went wild - slamming her ass back to meet his thrusts.

"Fuck! Fuck! Fuck!" Nikki was spewing profanities, completely lost in her own private world of bliss.

This was too much for Paul, and he felt his own orgasm approaching.

"I'm gonna cum" he forced between clenched teeth, trying to hold back as long as possible.

"In my ass! Cum in my ass!" Nikki shouted.

Then she reached between her legs and gripped his balls. That was it for Paul - with a violent shudder he released his load into her ass. Nikki threw back her head and savored the warm cum being pumped into her. And just as his orgasm started to recede, she came one final time.

A deathly quiet settled over the classroom, both of them relaxing in the afterglow. Paul still had his dick up her ass and hands on her hips. Leaning forward he searched for her breasts, embracing her from behind. Eventually Nikki got up, extracting herself from him.

"Damn I needed that - I hadn't been fucked properly in a week!" she giggled.

"Glad I could be of service!" Paul couldn't stop smiling.

In silence they dressed, and left the classroom hand in hand. Paul half expected to see the hallway full of people with their ears to the door, but the building was deserted. He could scarce believe what had happened - he just had an amazing, erotic afternoon with this insatiable angel. Still without saying a word, they wandered back to the cafeteria. Just before reaching it, Nikki turned to face him.

"Well Paul, thanks for a wonderful afternoon" she gave him a big hug.

"Wonderful? You have no idea" he replied

"Oh, and by the way, you are now officially my math tutor!" said Nikki as she broke the embrace.

"I didn't realize we had an interview!"

"We did, and you passed with flying colors" said Nikki and then she turned to leave.

"Wait a sec. How do I get hold of you?" Paul asked a bit panicky. . "Don't worry, I'll find you. But please remember me." Nikki replied over her shoulder while walking away.

Paul stared at her retreating figure. He wasn't sure if he would ever see her again, but he knew that he would never, ever forget her.