By the time the first lecturer stopped talking were only going to have fifteen minutes at tops to fuck before the next lesson. And that would include legging it down all the stairs, finding somewhere halfway private for me to empty as much cum into Vicky as humanly possible, and then pegging back up to the third floor again afterwards.
Vicky had got the lecture off to a distracting start by trailing her fingertips up and down the inside of my thigh. When she heard how shallow and irregular my breath became - and how quickly - she soon moved on to teasing my crotch with the back of her hand. From the minute we sat down it was obvious that she was in the mood to tease me beyond craziness in such a public place. She knew we would have to remain looking studious - or at least basically attentive - for the next fifty minutes, without a hope of sneaking away unnoticed. In a large lecture theatre like this all the students tended to huddle together in small groups - no more than thirty people scattered throughout a room that could have comfortably held two hundred. No-one spotted Vicky's hand under the semi-circular desktop that curved in ever-higher rows around the room.
She leant towards me, her long dark hair brushing the side of my throat and sending a shiver of electricity crackling through my chest, bristling to my fingertips and down the backs of my legs - by way of delivering a supercharged bolt to my cock.
"Enjoying the lesson?" she teased gently. Without breaking eye contact she slowly slid her middle finger between her lips, moistening it wickedly, her eyes twinkling at my state of aroused fluster while trying desperately to retain an outward impression of composure. The first time my friend Keith met Vicky, he said that she had 'cock-sucker lips' - and that was one guy who had hit the nail on the head.
She drew the finger away from her lips, winked deliciously, and lowered her hand below the desk. The next thing I knew she had sneaked a fingertip under my belt, tiptoed past the waist of my underwear, and was sketching wet circles with the back of her nail around and around the swollen crown of my cock.
I couldn't drag my eyes from hers. Anyone paying the slightest bit of attention to us would have realised that Vicky's look of intelligent quizzicality had very little to do with the subject matter under discussion - which had now moved on to the range of statistical methodologies on offer when implementing a small-scale project. Her finger continued its round-and-round-the-garden on the head of my prick - which already felt dangerously enlarged for a man in such a public location.
She leaned sideways and brushed my ear lobe with her teeth.
"I'm going to make you come", she whispered, "Right here"
For the sake of academic appearances I pretended to be taking some notes, although I later realised that my notebook had been upside down.
"I'm going to toss you off here. I want to breath in the scent of your cum as it hits the desk and splashes your jeans. My hands will be covered, and your spunk will ooze between my fingers. Then ever so slowly I am going to bring a fingerful up to my lips and suck it down. And again - my hand will squeeze your jerking cock and take another handful, and I will lap it down without anyone in this room noticing a thing"
I tried to give the impression to the outside world that I was engrossed in the lecture by taking some pretend notes, although I realised too late that I was using a chocolate bar instead of my pen.
"And when he stops talking", she continued, giving a flick of the head towards the speaker behind the podium, "I am going to bob my head down, pretend to 'get something from my bag' and I am going to gulp myself a mouthful of cum in front of all these people"
In my mind's eye I could just see her re-emerging from under the desk, lips moist with semen - teeth barely parted so that only I could see the glistening trails in her mouth.
I battled to keep my breathing under some sort of control, along with the rest of me. In my mind's eye I was tearing her tits out from her shirt, buttons scattering over the table top, and unveiling her smooth almost-triangular breasts to the entire room. I was gripping her by the shoulders and dragging her out of her seat onto the desk, yanking all the time at her shirt, fabric ripping as I forced her down. The rest of our classmates would be finally wising up to what was happening and turning to watch - Vicky laughing with relish all the while. Then I would be unbuckling myself with one hand to free up my straining cock, while opening her jeans with my other had and clawing my way to her cunt.
But while my imagination was subjecting Vicky to this sexual frenzy, all I could really manage was to feign checking a quote in my open textbook, while making a fraudulent annotation in the margin.
At long last the speaker turned off the projection screen and gave us all a parting reminder to experiment with pivot tables in our spreadsheets before we saw him next. Pivot tables - fuck that! All I was planning to do was empty my balls into Vicky before I had to clap eyes on anyone else on the planet.
10:52. And we had to be back in the same seats at 11:10 for the next lecture to kick-off. With about fifty steps between us and the outside world. The basement toilets were closed for cleaning, so the handiest private bolthole was out of bounds.
While everyone else was still packing away their laptops, Vicky and I sprang to our feet and charged like Batman and Robin having just noticed the Bat Signal glaring overhead and anticipating heavy traffic on the streets of Gotham.
Her cheeks were flushed and gorgeous, her whole face lit up by an intense arousal that rippled out from her eyes. A flirtatious smile that probably owed a lot to the sight of me racing out of the lecture theatre with a desperate hard-on, hobbling along like some peglegged sex fiend.
Hand in hand and exploding with giggles we tore down the stairs, my coat billowing around me like a cape. We burst through the glass doors, sending them clattering back against the walls, and out into an icy blast of December. We paused for huffy breath, to share our laughter, but more importantly to decide where the hell we were going to go.
Watches ticking - 10:57.
We set off again, taking a sharp left and skirting the side of the building.
Past the industrial wheelie bins and round to the rear of the building. Not exactly a fantasy love nest, but it was going to have to do. No nearby windows overlooking us from this angle. Anyone on the buildings on the other side of the flyover was going to have to turn a blind eye if they saw anything that offended them. Hopefully secluded enough to avoid any accusations of indecent exposure.
She pushed me back against the bricks of the wall: both of us trembling from the sudden cold, but also clumsy with lust – our breath steaming around our faces in freezing clouds.
Up and to my left a steady stream of traffic was pouring across the flyover. Vicky's hands were gripping my jeans just above the pockets, tugging hard as if to haul them down over my hips. My belt stopped her pulling them down too far, but as she yanked uncoordinatedly the leather lowered a fraction and started to rub at the tip of my cock, which by then felt like it could burst out through my clothes. The top of my hard-on pushed above my waistband and immediately caught a shiver of cold air, but this only served to intensify the sensations thrilling along its length.
She started stroking the front of my jeans, cupping my hard-on through the denim and running her hand up and down as if eager to toss me off. The deep red of her lips painted an even greater contrast than usual against the December white of her skin.
