1. The scene is this: I’ve invited you to see me lecture at the university, knowing that something naughty is going to happen, but you don’t know what.
2. I have given you a textbook to take along to blend in.
3. ————————————-
4.  
5. You stepped into the auditorium, feeling very visible. It felt like the moment you walked in, everyone in there would recognize that you weren’t a student there. You didn’t look like a student of physics at all, you thought, they will discover you immediately. But aside from the hammering of your heart in your chest, the sound in the auditorium was like any other lecture about to start: the dozens of conversations between students, the laughter at in-jokes you had no hope to understand. There were more stained t-shirts and socks-and-sandals here than at a Star Trek convention. A nest of nerds, in their natural habitat. Nobody paid any attention to you, and you sat down near the back and quickly flipped open your laptop to hide behind. You felt like a secret agent, and it was a thrill. You cast your gaze around; there were about a hundred people there, sitting rather haphazardly on the rows slanting down towards the center, behind which loomed a wall of chalkboards - the old-fashioned, black kind. You checked your watch. 11:14, the lecture was about to start. You felt a gush of nervous excitement, of something indefinable.
6.  
7. Then, down along the side steps on the other side of the auditorium, I come in. Stepping down briskly, I'm dressed in black jeans and a blue shirt. I look just like I always do, calm and collected, and I'm carrying nothing. you are used to professors and teachers dragging in a pile of notes and books and computers to teach from, but I am completely unarmed. It’s just me. As I step down, I scan the room and see you. I give you a quick smile, the happy smile that says “found you” and you feel a flurry of excitement.
8.  
9. “Alright, time to go”, I say. A confident, resonant voice from in front of the chalkboards, “as you may recall, last time we derived the fictitious forces in a rotating coordinate system. I trust you’ve all had nightmares about the derivatives of unit vectors ever since.” A polite laugh ripples through the auditorium, and that was it; the floor was mine and I had the attention I needed. “Today, we’re going to actually apply that stuff to the real world, God rest our souls, starting with the weirdest one, the Euler force. Textbooks to chapter eight if you want Kleppner and Kolenkow to aid you on this quest. Otherwise, buckle up. The Euler force is what makes horses feel like elevators. At least on a merry-go-round.”
10.  
11. I’d been writing “Euler Force” on the chalkboard as I spoke, along with some mind-numbingly long inscrutable equation where I had underlined the last part, and you opened the textbook I had given you to chapter 8. There, a small folded piece of notebook paper was tucked between the pages. You took it out and looked around. You were quite far from any other student, and they were all taking notes and paying attention to I was unfolding some math on the chalkboard. With shaking hands, you opened it. It was my handwriting and all it said was
12.  
13. “Go into my office when I announce the break. Third floor, fifth door on the left.”
14.  
15. Your heart hammered, and you felt your mind racing while I filled the boards with calculations, gesturing to the students, making them laugh, acting as if this was a completely normal lecture. But you knew that it wasn’t, and you knew that I knew, too. I cast you glances every once in a while, a small smile just for you, and you tried to keep a straight face as to not draw attention to yourself.
16.  
17. The lecture felt long for two reasons; first, because the maths and jokes went completely over your head (I calculated how exactly to squash fighter pilots while training them) and second, because you couldn’t get your task out of your mind. So when I finally winded down a long math-heavy explanation to a question and said “ok, let’s take fifteen minutes, see you back here at 12:15”, you got up from the clatter of a hundred students getting up to stretch and refill their coffee and rushed to the back of the auditorium. You got to the double doors as the first one, and quickly went outside to beat the traffic. Third floor, fifth door on the left. The steps were right in front of me, and by the time you were up three flights of them, your heart was beating not only from the excitement, but from the exertion too. A single person in the distance was stepping down the hallway, but other than that you were alone. You ran, holding the textbook against your chest like a small shield, down the hall. The name-tags on the doors were unknowns until the fifth one.
18.  
19. Robert Burton
20.  
21. You looked over your shoulder, then knocked gently. No answer. You opened the door quietly and peeked inside. Empty. You slipped in quickly and closed the door behind you, and in the new-found silence, you listened to the thump of your heartbeat like a drum. It was an office full of books on the walls and a desk rather cluttered with papers, journals and hand-written notes.
22.  
23. You didn’t have to wait long. The door opened, and in I stepped. I smiled at you, a mischievous and hungry smile, and closed the door. “Got the message, I see”, I said ,as I turned the knob to lock the door. “I’m glad to see you here.” I strode up to you and kissed you. It was so unexpected that you almost dropped the textbook, which I took from you and dropped on the ground beside you. My hand pulled you against me by your ass, a dominant grip as my other hand caressed up your back to tighten in your hair. I broke the kiss. “The door is locked but it’s not soundproof”, I said, “understand?” You nodded. I let go of your ass and put a finger against your lips, holding your hair like that, in a firm yet gentle grasp, looking into your eyes with a caring yet dark hunger for me. “On your knees”, I said, and you did. I didn’t let go of your hair. “Look up at me”, I said, “don’t look away.”
24.  
25. You heard my belt unbuckle, the belt you had been looking at during the lecture while trying to distract yourself, but you didn’t look away from my eyes. I had calm yet firm eyes, a man in control, and I held your head by your hair firmly but painlessly. “Put your hands behind your back”, I said. You did. When you dipped your eyes momentarily, I tightened my grip in your hair a little. “Don’t look away”, I said, firmer. You looked back into my eyes. They smiled at me. “Good girl”, I said, “open”.
26.  
27. You opened your mouth as you listened to the unbutton and unzip of my jeans. Then, you felt it. Heavy and warm against your lower lip, the tip of my cock was resting there. You opened your mouth wider and tried to put it in your mouth, but I held firm. “No, no”, I said teasingly, playfully, calmly. “I want you to want it more.”
28.  
29. You looked up at me, silently, pleading with your eyes, feeling my warm heavy cock resting on your lip, moving your shoulders and gripping your ankles with your hands behind your back.
30.  
31. “Want it?” I said.
32.  
33. You nodded, not looking away.
34.  
35. “Tell me to fuck your mouth.”
36.  
37. You felt an explosion of excitement in your belly. You took a couple of quick breaths to prepare yourself, and then you started saying it. You didn’t get further than a small, breathless “please fuc—” before you felt your mouth being filled with my thick, veiny cock, the grip on your hair firming as I pushed it deep into your mouth. Your eyes flickered in pleasure, and I stopped, deep inside your mouth. “Don’t. Look. Away.” I said firmly. You focused your eyes on mine, looking down on me, with hunger and dominance, and I started moaning quietly, biting my lip as I fucked your mouth. You could tell how good your mouth was making me feel, and looking straight up at my pleasure made you feel even more wet than before. My cock grew harder and thicker in your mouth as I fucked it, and you felt your mind fading away a little as you just became a body and your senses for me, feeling every vein and contour of my cock against your lips and tongue as I moaned with such hungry pleasure.
38.  
39. And then, without warning, I lifted you off your knees and you were lying face down against my desk, your cheek pressed against the notes, the characteristic scent of paper suddenly in your nostrils, as I held my hand over your mouth, the other hand lifting up your skirt and pulling down your panties to halfway down your thighs, and you felt my fingers play with your clit from behind, catching your moans in my hand as I leaned over you. “You’re so wet for me, you naughty girl” I said, sliding a finger inside you as you gasped quietly. I fingered you like that, my long experienced finger moving into you, then out to play with your clit again, then two fingers inside you as easily as one. Then, you felt me. My long thick cock slid inside you from behind, and you moaned so loud into my hand that I clamped it harder against your mouth, and I started fucking you, first grabbing your hip with the other hand, pulling you against me, almost fucking myself with your body as you rocked back and forth over my hard cock, your breasts and belly sliding on the papers of my desk. And then, I grabbed your arms and held them behind your back, wrist over wrist, clamped in my firm hand, my other hand still over your mouth, and I fucked you harder and faster than I had ever fucked you before, so deep and fast and fiercely and nothing even resembling a thought would stick in your mind. You were just in the moment, being fucked hard and mercilessly, listening to my stifled moans and groans of pleasure behind you as I held you down and fucked you.
40.  
41. I pulled out and let go and rushed to the side of the desk where, while your melted body was still powerlessly draped over the table, I pushed my cock into your mouth again and stifled my roars of pleasure as my orgasm made my legs shudder and shake, enhanced by the silence I had to keep, and you felt my warm, thick cum fill your mouth and spill onto your lips as I fucked your mouth while you were still half-standing, knees soft, feeling the echo of my cock inside you and the cool office air against your naked skin and wetness as I pulled out, and you swallowed the warm, slightly sweet and salty cum.
42.  
43. I leaned down and stroked your hair and kissed you, and you smiled, unable to even move your head or open your eyes, still halfway outside your own body. You felt me pull off your panties down over your calves, and you helped me get them over first one shoe, then the other. I helped you onto your feet. Your legs were shaking, and I made sure you were stable on your feet. “All good?” I said. My tone was calm, caring, warm. I wiped a drop of cum from your lips and you licked it off my finger. “Y-yes”, you said. I pulled your skirt down neatly and handed you the textbook from the floor. “Good. Now you’re going to wait 30 seconds after I leave and then take this book back down to the auditorium. On the way, you’re going to pass people, and you’re going to tell them, silently, inside your head, “I was just fucked in the professor’s office and you don’t know.” Understand? Then, you’ll sit in the auditorium for the second half of the lecture and enjoy that nobody knows what you just did, and that the students don’t know that your wet panties are in my pocket.”
44.  
45. I left. You shook myself out of it as well you could, grabbed the book, and went out of the door. You felt the cold air against your wetness under your skirt and you felt so naughty for not wearing panties underneath, and as you approached a person passing you in the hallway, you were amazed how he walked right by you without noticing a thing. You felt incredibly naughty, and you looked at the next guy you walked by and smiled politely while, in your head, you said to me “I was just fucked hard and I can still taste his cum and you don’t know.” It thrilled you like nothing had before.
46.  
47. You sat down in the auditorium, hid yourself behind your computer and watched as I continued my lecture as nothing had happened. My pocket was bulging slightly and you knew why, and you felt myself drip down the inside of your naked thigh as you looked around and saw that nobody suspected a thing.
48.