Calculus Leads To Differentiation And Integration
hot, office, sex

Hi to all of you on ISS. My name is Shanti, I’m posting my experiences once again on this site. I hope this gets published too and I’m eager to see the responses from all the readers. Fact is, I’m a married woman, settled in Chennai now, with a kid. I’m 31 years of age, dark brown skinned (a typical Indian skin color) smooth skin, 5′ 1″ height with a 34 – 26 – 36 figure. When this incident happened I was 19 years old, studying in college in Trichy, Tamil Nadu. I’ll narrate this episode in present tense, just to make it sound as if it’s happening now. I’m the only daughter of my parents and am quite the spoiled brat, you could say. My parents indulge me and allow me a fair amount of freedom despite our coming from a fairly typical, middle class background. I’ve always been good in studies and sports and have dreams of playing volleyball for India as I am already playing for the state team. Due to my commitments to the team I sometimes end up missing classes especially when the tournaments are outside the state. In order to ensure that I do not lose out on my academic pursuits my Dad enrolled me for mathematics and science tuition with a neighbour who was teaching post-graduate classes in the engineering college. Madhavan Sir was a brilliant research scholar and was extremely popular with students and was well known in the locality. He was around 43 years of age, married and had a small son aged around 10 years. Madhavan Sir was also quite a strict disciplinarian and hence whenever I attended his classes I used to remain focused on the subject and quickly earned his praise. Along with me there used to be around 12 other students of varying backgrounds, ages etc many of them who were students in his college too. Madhvan Sir would always tell them to look at me and learn how to be an “all rounder” good in studies as well as sports. Because of this constant praise the other students began to make fun of me when Madhavan Sir wasn’t around, they used to call me “Teacher’s pet” and other such names. I never bothered too much, though, secretly I used to feel happy that I really seemed to be Madhavan Sirs pet. One day, after having been out for a volleyball tournament for a week, I realized that I needed to spend some quality time with Sir to catch up on my backlog of portions. I requested my Dad to call up to Madhavan Sir and find out if he would take special classes for me alone, extra hours. Thankfully Madhavan Sir agreed and within a short time I landed up at his house. Sir had informed my Dad that he would take extra hours and that I would have lunch and dinner too at his place. Since my Dad knew Madhavan Sir very well he too agreed as my exams were around the corner. When I landed at his place I realised that Madhavan Sir was alone at home. He explained to me that his wife and son had left for her village that morning to attend a wedding. He also explained that his wife had asked the maid servant to cook lunch and dinner etc so we could get down right away without any delay to my subject portions in maths and science. We opened the books and got engrossed in Calculus. Within a few minutes Sir gave me a few sums to try and solve on my own after explaining the fundamental principles of integration. He then left the room saying that he would have his bath and return. I simply nodded and focused on the problems. Some twenty minutes later Madhavan Sir returned, having bathed, towelling his hair. He was dressed in a white dhoti but was otherwise bare chested – I was seeing him like this for the first time and couldn’t help but stare. The guy was a Hunk – a little bit of hair on his chest, an absolutely flat stomach with just the faint outline of some ab-muscles, fabulous biceps etc. I found it oddly exciting to know that he and I were alone in the house and he was just a few feet away. My stomach started fluttering and I found myself flushing with beads of perspiration on my brow. I could not concentrate much and started making silly mistakes as a result. Seeing my flustered condition Madhavan Sir came close and stood over my shoulder looking at my work, still continuing to towel his hair. He noticed that I had made some errors and reached over my shoulder, pointing at the two or three places where I had made mistakes. As he pointed I sat up straight, my back now almost touching Madhavan Sirs body. He did not notice the movement, though I felt an electric shock as my back brushed against his flat, hard belly. I could feel my pulse quicken though I couldn’t explain to myself why this was happening. Madhavan Sir, meanwhile, continued talking, pointing out the correct sequence of steps. He slowed down his speech as he realised that I wasn’t listening. He came around and sat in front of me, in his usual position and looked at me. I think he began to get an idea of what was wrong but, decent soul that he was, he was even more embarrassed than I and pretended not to have noticed anything. A couple of seconds silence ensued after which he cleared his throat and asked loudly “Shanti, have you understood?” and I merely nodded dumbly, unable to speak in words. I bent down to my notebooks once again and tried to focus on the problems while Madhavan Sir remained seated in front of me. For a few minutes there was a total silence in the room, just the sound of pen on paper. I then heard Sir clear his throat and I looked up – Madhavan Sir’s face had gone red and he looked guilty. I then realized that from his vantage position he would have had a clear view of my cleavage through my T-shirt top. Inexplicably, instead of feeling offended or upset, that though actually made me deliriously happy, knowing that Madhavan Sir was getting a good peek at my breasts. I was young, just 19, my breasts were still developing and was a size C. I was wearing a brassiere, of course, skin toned, but he could still get a glimpse of more than was “right” given the nature of our relationship. Anyway, as I said, I was extremely joyful to know that Madhavan Sir was getting red in the face looking at my milk jugs. Pretending not to notice his embarrassed I asked him innocently a couple of “doubts” about integration and pretended not to be able to understand it when he tried to explain. Deliberately I remained a bit stubborn hoping to get him irritated and, sure enough, in 2 minutes he began scolding me for being “stupid. I was waiting exactly for that moment! The instant he called me “stupid” I buried my face in my palms and began to cry, weeping inconsolably and accusing him of shouting at me. Sir was totally flustered at this and did not know how to react while I kept increasing my sobbing, crying to him that despite all the efforts I was trying to put in, if I failed the exams my father would be very angry with me etc. As I expected, Madhavan Sir got up from his chair and came around to me and lifted me up. Putting his arms around my shoulder he chided me gently for crying and wiped my tears (I can cry as and when I wish, a trick that has helped me often). Taking advantage of his gesture I buried my face in his chest, getting as close to him as possible, and continued to sob. Madhavan Sir was left with no option but to put his arms around me. I, too, turn facing him fully and by breasts were now pressed fully into his body while I placed my hand on his chest, circling his nipples firmly, all the time pretending to cry. I could feel a tingling sensation start off somewhere inside my stomach and spread warmly down to my “you know where” – my thighs were trembling with an aching anticipation and I thought that surely now Madhavan Sir could hear the roaring beat of my heart. Sensing the need to push things along I lifted my face up to look at Sir – he seemed confused and conflicted about what next to do. Clearly I could see the stirrings of desire in his eyes, fighting with the need to remain decent and respectable. Unwilling to wait any further, I reached up and buried my face now in his neck, close to his clean shaven jawline and pressed my body even closer to his while whimpering “Sir, you have been so kind and so good to me, I don’t know what I would do without you. I depend on you for everything. Please don’t shout at me, whatever I do. I admire you so much that even the slightest criticism from your lips is unbearable. I will do anything for you”. I could see the hairs on his chest and forearms rise and stand on end, I could see the goose-pimples form and knew he was getting “turned on. Madhavan Sir was now in a fix. He was torn between the stirrings of physical desire and the sense of decency that held him back. The “thinking” part of me felt a sympathy for his predicament, even a sense of admiration for his restraint – but then, the thinking part had already lost the battle to my deeper needs. Sir put his hands around me now and I turned my body in such a way that his hand now rested close to my breast. I pretended as if I was taking my kerchief from my skirt pocket and dropped my hand down, brushing past his tool as I did so. His cock seemed to be semi erect and rather heavy, I liked the shape of the tool through the thin cotton of his dhoti. Allowing my kerchief to fall from my hands I stumbled awkwardly as I bent down to retrieve it. As I did my face brushed against the front of his dhoti and I sensed his cock jerk reflexively. Standing up again, I told him I was feeling slightly giddy and sat of a sofa. Sir sat by my side and started stroking my back. I leaned into him and rested my hand on his thigh, feeling the hard muscles. I asked him “Can I lie down for a few moments?” and, without waiting for his response, lay down on his lap. Madhavan Sir didn’t say anything but continued to rub my shoulders now while I positioned myself, keeping my face buried to his bare stomach now. God, he smelled lovely, a nice manly odor mixed with the freshly bathed smell of soap and talcum powder. My head was resting just on top of his now fully erect cock and I could feel the warm heat emanating from his loins. It was a delicious feeling, and I was enjoying the proximity and the heat. I knew that even at this stage, madhavan Sir would be tentative, afraid to make the first move. I closed my eyes, in enjoyment of his hands rubbing my shoulders and placed my own hands on his, moving it inside my T shirt but still on the shoulders only. I whispered to him “Sir, please rub me here” and showed him how to do it, a circular motion that went from my neck to my shoulder and back. Damn, he did it too, a slow movement, gently kneading the muscles there. I sank into his tummy and in turn began to let my lips trace small kisses on his bare tummy, and, finally, licked his navel. He shuddered gently, trembling, and let out a small moan as he said “Shanti, what are you doing? In reply, I wrapped my arms around his waist and continued to kiss him tummy while moving up a bit so that his hand was now deep inside the T shirt, just near about cupping my breasts. I whispered into his stomach but loudly enough that he could hear me “Sir, this feels so good sir, just keep doing it, don’t stop please! And with those words I placed my right hand on his manhood from over his dhoti. He too couldn’t hold back any more and allowed his hand to slip inside my bra and cup my right breast and squeeze it hard. Emboldened by his cooperation I too reached inside his dhoti and placed my hand on his cock over his briefs, rubbing it well and nicely, all the while my tongue continuing to salivate over his flat hard abdomen. I pulled his face down to me and now kissed him squarely on his mouth. He tasted good, clean, and he had a nice technique too, his lips sucking on mine for a few long seconds before opening up and taking my tongue into his mouth. We sucked and kissed each others mouth, lips, tongue, face etc while he clumsily but successfully managed to remove my T shirt. By now I too had pulled the knot of his dhoti which now lay on the floor and my hands were inside his jockey shorts, feeling the rubbery smooth length of his thick cock. He got up, suddenly, and lifted me physically in his arms and carried me to the bedroom and laid me gently on the bed. Lying by my side he gently kissed my lips while his hand went to my breast from over my bra, cupping my left breast gently kneading it. He tasted so good, his tongue probing my mouth as our lips remained locked. I wanted him badly and, like, Now so I too reached up and placing my hands around his neck pulled his mouth down to my neck, my chest, guiding him to where I was heated up the most. My hand was now between his thighs, opening up the elastic of his jocks, pulling it down past his hips and releasing free his wonderfully hard manhood. Slowly stroking it I made his already hard cock grow even harder, pulling it and squeezing it alternatively. His balls were big, heavy and covered with a thick forest of curly black hair. Since Madhavan Sir was busy sucking my nipples I couldn’t see his tool yet but even without having set my eyes on his cock I knew I was going to enjoy his hardness inside my wet hole. I was going to make him soft inside me and soon. Without more delay I whispered to him “Sir, unga samaane en koodhi kulla seekaram vidunga, nalla idiyunga” (Sir, please put your tool into my cunt quickly and bang me”. If he was surprised to hear me use such language he didn’t show it. Lifting my hips he pulled my panties off in one fluid motion, reached behind me and unclasped my bra setting my jugs free and went back to burying his face between by boobs while with one hand he rubbed my already heated cunt. I moaned, this was being in heaven. Now he inserted first one finger and then another into my love hole and started slowly fingering me while he asked “Is this your first time?” I shook my head to say No – I was not a virgin. A look of surprise flashed over his face but that didn’t stop him continuing to finger me while I too played with his cock and his balls. Now I was licking his chest, my tongue exploring his small, hard, erect nipples and going up to his arms, his biceps and then into his hairy armpit. Suddenly his body vanished from my sight as he swiftly moved off my chest and spreading my legs open he began to suck my clit. THIS was a first time experience for me and it was absolutely marvellous. I had never in my life imagined how sensational a good cunt lick could be and I just didn’t want it to stop. Spreading my legs as wide open as I could I grabbed Madhavan Sir’s head while literally thrusting my hips up to meet his face. He slobbered, he sucked, he licked, he poured his saliva deep into my cunt’s hole until I didn’t know whether I was more wet with my juices or with his saliva – and he kept drinking it all, I could hear the slurping wet sounds that were being created by the sucking sound whenever his lips and my cunt parted for a brief second or two. That sound itself was so wonderfully erotic that I could feel wave after wave of orgasm build up inside me, from deep within my stomach and pour over me.He looked up at me and grinned, a wicked, handsome grin and asked “Nallaa irundhucha? Did you like it, my honey?” I just squeezed my eyes shut and nodded, whimpering, small sounds deep inside my throat. As he got up I quickly grasped his cock and swiftly turned around in the bed and swallowed the whole length of it – a big, black, thick, long and hairy monster of a cock with two big, hard, black balls beneath it. Madhavan Sir gasped in joy and I sucked his tool dep into my throat and he fell, losing his balance, over my body. I reached up, grabbed his buttocks and pulled his hips and he, in turn, started to pump his rock hard rod into my mouth. In some few minutes I pulled out and ran my tongue up and down the length of his shaft while occasionally licking his scrotum and even venturing up to where I could see his ass hole. The taste of a man’s cock is heady, strong and sweet – I learned it that day. Meanwhile, Madhavan Sir too, lying over me, resumed eating my still wet pussy and we were lost, exploring each others tools. Lifting me up, off the bed, he positioned me further down the mattress so that my feel were dangling down. Spreading my legs open Sir stood between my thighs and asked me to hold his cock in my hand and guide it into my cunt. Before I did that, though, I rubbed the head of his cock on my clitoris, slowly, up, down and round and round. I was in heaven now, the sensations around my lower two lips, my throbbing, engorged clitoris all converging to one remarkably sensual feeling. Sir now pushed in, his thick cock slowly spreading my wet yet tight cunt walls open as he entered slowly, prolonging the moment as much as he could. I could feel a warm slab of rock hard meat pulse into me till the whole length of 8 inches lay buried deep inside me. I wanted to squeeze it tighter and, unconsciously I squeezed the twin walls of my cunt. To my utter surprise I realised that I was actually able to do it – and, from the look on Madhavan Sir’s face, this was something new for him too!! Grinning at him I asked “Enna aachu? Surprise aayitengala?” (What happened? Surprised?) He laughed loudly and said “That feels Fantastic! In all my life you are the only girl apart from my wife with whom I’ve had sex. And this is the first time I’ve experienced This! And with that he began to drive his piston into me while I too reciprocated by lifting my hips up every time he drove down. Every now and again I tried to squeeze my cunt walls, gripping his tight fat cock and releasing it and each time I could see by the look on his face that Madhavan Sir was loving it too. He lay on me, mouth furiously licking my breasts, my nipples, my neck, kissing me while steadily pumping away between my thighs. And I was in heaven praying that he would last a while longer – and he did, for almost 6 to 7 minutes increasing his speed and grunting with the effort while, in truth, I too started screaming loudly “Sir, Sir, nalla okkunga, nalla idinga, innum vegama, innum vegama, en koodhi kizhiyara maadhir idinga Sir, Sir, fuck me well, bang me well, faster, even more faster, tear my cunt up with your passion!” I could feel the pressure build up within me but just a couple of seconds before I climaxed I felt the hot sticky gush of his cum, his semen spurt into me leaving me feel dirty, unclean but undeniably hot and wanton. His white liquid was still being pumped into me while I began to experience my own climax, a warm wetness filling up my own hole mixing with his semen and flowing out between my thighs. Sated with pleasure I lay back on the bed and a few seconds later I heard a “Plop” as his cock slipped out from my hole and fell, soft and delicious. Madhavan Sir rolled off my body and closed his eyes, breathing heavily. I took his semen coated cock and sucked it slowly, licking it clean, liking the taste of his semen mixed with my own creamy honey. Madhavan Sir pushed me away and said “Enough for today, I wasn’t ready for any of this. Come tomorrow, I will have a special class for you! With that he winked knowingly. I went to the washroom and cleaned up. Did you like my story? If you did, write to me at [email protected]