[Note: This story is protected by copyright, 2010, by the author, and cannot be used for any commercial purpose without his prior consent. It may however be used for non-commercial distribution or archiving, provided this notice is kept along with the story and you request authorisation by e-mailing the author at philip_60@hotmail.com]

Kim's sensuous face and voluptuous body were right out of a wet dream, enough to send our young and ready cocks into overdrive! This was all the more accentuated by her tight-fitting outfits. Her flimsy tops could barely contain her firm and fully-grown boobs, making it well obvious she didn't wear a bra. Her tight jeans or short skirts did everything to enhance the appeal of her bottom assets. She never wore any hose or socks, showing off her perfectly tanned legs whenever she wore a skirt or a dress. Her jeans were usually so tight they looked as if they'd been painted on. They were the low-rise cut, clearly revealing the naked crack of her ass each time she sat down. Unlike the other girls, we could never see any undies when she did that.... Along with my buddies, we'd all been betting she didn't wear any, and were each on a race to be the first to prove it!

But all the rumor was about her being a little cock-teaser. We'd heard countless stories from older guys how she'd left them with blue-balls time and time again. She'd earned her reputation as an expert masturbatrix, seemingly able to drive the guys right to the brink of eruption and stopping each time at the most crucial moment. These stories only served to increase our arousal, and reckless desire to get into the pants of this sexual goddess.

That's when the first accident happened. That day, our class-room had been set for a debate on sexual discrimination, the tables drawn in a rectangle around the room. As fate would have it, Kim was sitting straight across from me, and she was wearing an even shorter than usual mini-skirt. I couldn't help staring at her crossed legs, up from her white stiletto sandals to the top of her thighs, fascinated by the enticing space that remained hidden just above... I finally looked up at her, and turned red with embarrassment when I realized she'd been watching me looking up her skirt. But rather than looking cross, she smiled at me and licked her lips as she herself looked down towards my swelling crotch. I was wearing old 501's that I'd grown too tight in, and knew my arousal must have been obvious. I shifted in my seat, crossing my legs as I tried to adjust the position of my swelling member to make it more comfortable. But this only increased the pressure over it, and I couldn't help start rubbing my thighs together to try and ease the itching. This made my arousal even worse.

As she kept looking at my crotch, Kim took a pencil and started sucking the tip between her sensuous lips. The way she rolled her tongue around the tip was just too suggestive. I felt right about to explode, barely able to control myself. Suddenly she stopped, making some contribution to the debate as if nothing had been happening:

I hadn't paid any attention to the debate and blurted,

She responded:

I didn't know where to hide as everyone started laughing. I felt my face turn red. Before I'd figured out what to answer, all the guys had started protesting, turning the debate quite heated. As it went on, Kim resumed sucking her pencil, while her right hand went down under the table and grabbed the stiletto heel of her left sandal. The way she rubbed her palm and fingers back and forth along it left me no doubt as to what she was so vividly simulating. And she kept staring at my swollen crotch as she did that, making me feel as if her fingers were instead rubbing over my straining cock. She had me right on the edge of exploding with her little show. The arousal made me shift in my seat, unable to stop my thighs from rubbing harder together.

That's when she let go of her heel and slowly uncrossed her legs, watching my reactions. The sun was shining right towards her, giving me a clear flash of her visibly naked pussy. The sexy bitch was giving me the full Basic Instinct treatment, and it was just too much for me! I desperately tried to hold still and avoid my boner any further stimulation. But it was already too late... I could feel my cock throbbing, my cock-head tickling as it rubbed against its tight confines. I just couldn't help it and started bursting my load of arousal into my briefs. Kim flashed a triumphant smile at me, seemingly aware of the effect of her little show. She crossed her legs back to a less revealing position, making me a hush sign with her pencil on her lips.

My briefs were getting uncomfortably wet, and I was concerned my cum would leak into my jeans. Fortunately, it was the end of the class. I rushed to the toilets, took off my briefs and tried to clean-up. Going commando for the rest of the day was a new experience, the rubbing of my tight jeans soon stimulating my cock back into an awkward-looking straining pole down the length of my left thigh. The truth is, I was enjoying the feeling. Perhaps because it was so dangerous. Only my briefs had just saved me from total embarrassment, but now I felt totally exposed to the risk of another uncontrolled outburst. I kept thinking about the way Kim had just driven me past the edge, and the vision of her naked pussy was making my head spin, keeping my arousal at fever pitch.

As I walked out, I came across Mike, one of my best buddies. He went like:

I couldn't help telling him:

He asked:

I laughed:

I remembered too late Kim had told me to hush:

When the day ended, Kim was waiting for me as I drove out of school on my brand new motorbike. She readily asked me:

I tried to play it cool:

She laughed as she climbed behind me and tightened her arms around my waist:

She then whispered in my ear:

I blushed:

She replied:

I tried to apologize:

She protested:

I replied:

She purred:

She paused as her right hand moved down from my waist to rest upon the top of my left thigh, her fingers almost touching my straining cock. She whispered in my ear:

As she said that, her hand grabbed my swelling cock through my 501's, and started rubbing. I immediately knew what the other guys were meaning when they spoke of her masturbating talents. After only a few strokes, I already felt on the brink of losing it! She let go of my cock and started exploring the button-front of my Levi's, driving her fingers into the holes...

Without waiting for an answer, she purred:

Her middle finger had found its way down my naked cock, rubbing the underside. Once again, she had me about to spill it! She removed her hand and continued:

Her fingers started slowly brushing down the length of my rod through my Levi's:

As she said that, her fingers grabbed my cock-head through the tight faded denim, and started squeezing it as she rubbed the underside. I couldn't believe how expert she was at it! I was right on the brink of spurting into my jeans! She stopped at the precise moment I felt I would explode. She squeezed the base of my cock between her fingers and commented:

During the rest of the week, I became Kim's private driver... Taking her to and from school on my motorbike... And everyone of these rides became a total torture... The first thing she would do was to make her way underneath my jeans and check my lack of underwear... After that, her right-hand would slowly stroke my swelling member through my tight jeans, and each time leave me on the brink with a rigid boner... Of course, things were made all the worse by the other condition... Not being able to let my young tension find its natural escape meant I was starting to have a severe case of blue-balls. It also meant my cock was getting ever more sensitive and ready to burst at the slightest stimulation. It felt so dangerous, but I so much needed relief from my unbearable arousal, I almost hoped she would make me spill it with one of her killer strokes. But she seemed each time to sense the exact moment where it would be too much, and stop just before reaching that!

Came Friday morning... Her top was even tighter and her skirt even skimpier than usual, and I could feel her rubbing her snatch against my butts. Meanwhile her strokes were getting more insistent than on the previous days. As we were reaching school, she seemed ravished as she said:

If I'd been wondering about her lack of underwear, the answer was now obvious. I pictured her naked snatch rubbing against my butts, and felt my cock was ready to explode. As her fingers slowly brushed up and down the length of my boner, she purred:

But this time instead of stopping, she grabbed my cock-head between her fingers and started rubbing the underside. That was just too much for me, and I started helplessly cumming into my jeans. This was the moment I'd both been hoping and dreading for several days... I knew I'd got no briefs now to make the effect less obvious... At that precise moment, the sexy bitch removed her hand, and started getting off my bike. I tried all I could to stop my desperate flow from making further damage. Enough for me to stay as aroused as I ever had been, but not quite enough to stop a tell-tale wet spot from forming down my left thigh... Looking down at me still sitting on my motorbike, Kim exclaimed:

Her fingers reached down to feel the wet fabric surrounding my still erect cock-head as she added:

I was mortified. I had to spend all day at school trying to hide my condition, and had to wait an extra week for my date with Kim. Despite this, I was hooked... Hooked to the feeling of her fingers performing their magic on my helpless boner! And hooked to the feeling of being commando as she did that, both increasing the sensation and the thrill of accidents like the one she'd just caused.

Over the weekend, she told me to drive her to a couple of other dates she had... She explained:

The following week was an almost constant torture... She'd moved to sit next to me in class, making sure to sit on my left so her right hand would be in reach of my swelling cock as it made a visible tent down my left thigh... And every now and then when no one was watching, she would indeed treat it with a few expert strokes that left me on the brink of bursting... I was so taken, I was losing all attention to the class... I was just longing for the feeling of her fingers on my desperate hard-on. Meanwhile, she was keeping her head, acting as if unaware of what was going on...

On the Friday, she was wearing a flimsy white dress. The way her firm tits were showing through the thin material was enough to give me a constant boner. It was really obvious she didn't wear a bra... During the class, she asked me:

I replied:

She said:

She rested her right hand on my thigh as she asked:

Her hand started slowly moving up my thigh as she added:

Her hand stopped just as it reached my cock-head. My hard-on throbbed against it, getting even harder as it strained to increase the contact. Still with the picture of her previous pussy flash in my mind, and its fateful consequences, I looked down at her naked thighs, barely covered by her nearly transparent white dress... I helplessly blurted:

I was almost sure she didn't wear any panties. She started slowly rubbing the side of her hand against my totally erect cock-head as she purred:

During the rest of the class, her deft fingers kept discreetly playing with my cock-head under the table. She was literally having me on the brink of losing control almost all the time.

After everyone else had left for the break, she got up and sat on the table in front of me, her thighs wide open to fully expose her naked snatch! She raised her legs to pull my head between her thighs as she purred:

As I started licking her sweetly perfumed treasure, she rested her stiletto-clad feet onto my lap, her right heel slowly brushing up and down my rod. I knew anyone could come in and catch us. Her heel became more insistent, stimulating the underside of my nearly bursting cock-head as she whispered:

She seemed to explode in a wild orgasm as her heel jerked against my cock-head in such a way as to make me completely lose it. Feeling totally helpless, I started ejaculating into my jeans as she removed her heel and pushed my head away:

As I desperately tried to stop the flood, she climbed down from the table and sat back next to me. She acted as if nothing had happened. Meanwhile, I could feel the soaking wetness of my cum filter through the faded denim. And my boner was left all the more desperate for this. The expert little slut had removed her heel at the most crucial moment, depriving me of any real relief! After a while, she looked down at my crotch and whispered:

I looked down and was amazed at the extent of the damage... I knew how embarrassing it would be to stand with that during the rest of the day! I pleaded:

She replied: