"Angelo, if you and Pablo would like to begin." Grinning the two boys reached out and almost carelessly began to explore the sticky folds and openings. Lisa started to squeal and gasp immediately. Her bottom cheeks clenched as a boyish fingertip pushed firmly against the tight ring of her bumhole. At the same time her inner lips were pulled apart and fingers began to delve into the slippery crease. Two and then three digits slid deeply into the tight hole opening the vulval crack and revealing it's delicate pink interior. As the fingers began to move back and forth Lisa groaned and writhed provocatively on the black leather. The muscles in the back of her thighs tightened and relaxed as she moaned and shook her head slowly from side to side. Suddenly she squeaked as the boy teasing her bottom managed to slip his finger past the desperately squeezing ring of muscle. She was doing her utmost not to succumb to the sensations that were coursing through her but arousal was washing away what little resistance she possessed. The intense humiliation and handling of her private parts was driving her quickly towards orgasm. Noooooo! They mustn't do that to her. She couldn't let them see her come! It would be so so embarrassing! The shame would be unendurable!



She felt her labia being stretched further apart then four fingers were pushed firmly into her soaking pussy. Her eyes opened wide but for a moment refused to focus on the sea of interested faces. She was so ashamed but so turned on at the same time! The two boys were penetrating her simultaneously. She could feel them deep inside her holes. Oooooohhhhhh! But it felt so good! Her moaning gradually became more frantic, the soft walls of her pussy gripping the fingers as they slid wetly back and forth. Even though she hated herself for reacting she felt her body nearing the brink. The shame inducing exposure was proving an unbearable stimulus. Through hooded eyes she looked back between her open thighs at the boys and teachers as they stared down at her. Oh God she was going to come! Suddenly she was jerking on the delicious fingers and groaning urgently.

"Boys, when she reaches orgasm you'll feel her vagina squeezing your fingers." Then Geraldine Johnson began to laugh,

"But it's pretty obvious she wants us all to know what a little slut she is! Listen to all the noise she's making!" Lisa could hardly stand the intense sensations that were emanating from her pussy and flowing into her belly. Then the dam broke and she threw her head back as every muscle in her body stiffened in a paroxysm of pleasure.

"Aaaaaaahhhhhhhhh! Nnnngggh! Nnnngggh! Ohhhhhh!" She was coming and jerking and coming and gasping and groaning and.Ohhhhhh they were watching! They were seeing everything! Her feelings of humiliation and shame intensified the already powerful orgasm as she writhed in its' delicious embrace.

"Yes Yes Yeeeeeeesssssss! Oh my god! Aaaaaahhhh!" She was aware of laughter and voices but couldn't decipher any actual words. Gradually she came back to the real world her senses slowly coming back into focus.

"Open your eyes you dirty girl," said Simon Barrow pleasantly. She let out a shuddering gasp as the boys' fingers were roughly plucked from her. Sweat was coating her upper lip and forehead and she moaned softly as tremors, like tiny aftershocks, flowed across her stomach.

".so once the mental stimuli are present orgasm can be triggered by penetration alone. Many females however require additional external stimulation as we'll see in a moment."



Lisa sighed with relief when her ankles were released from the stirrups. The muscular spasms she'd experienced when the orgasm had hit had been almost painful in their intensity and although her legs had only been secured above her shoulders for a short time they had already grown numb. However a few moments later she found herself fixed in another equally embarrassing position. She groaned in discomfort as her legs were lifted and stretched achingly wide apart by the metal brackets. Once again the hairless mound and delicate lips of her still tingling pussy were shamefully exposed.

"Well missy I think we may have something here that you're going to find very enjoyable!" said Miss Johnson, as she chuckled and pulled the mysteriously shrouded trolley closer. Lisa knew that whatever was coming was going to be dreadfully humiliating. Turning her head to one side, her eyes opened wide as the schoolmistress removed the cloth with a theatrical flourish. There was an excited intake of breath from the boys then an explosion of animated conversation. It was basically a white box from which protruded a steel rod but that wasn't what surprised Lisa and made her heart hammer wildly in her chest. It was the three red rubber dildoes that stood rigidly by its side. Her eyes darted across them. The first was of normal proportions, whereas the second was considerably longer and thinner, but it was the final one that drew her gaze. It was big and frighteningly thick and its' surface was dotted with sharp knobbly protrusions. Involuntarily she gasped as her stomach lurched and her mouth went suddenly dry. A hushed sigh of approval greeted her obvious display of apprehension. Oh my god! She was going to be fucked in front of them! And fucked by a machine! Nooooo! Oh please No!

"We'll start with simple penetration and then see what happens when the clitoris is stimulated at the same time."



"Nurse" Palmer pushed the trolley around the couch and positioned it between the waiting "schoolgirls" widely spread thighs. Lisa watched worriedly as Geraldine Johnson picked up the first dildo and quickly coated it with lubricant. She slid it effortlessly back and forth through the palm of her hand, smiling down at her vulnerable volunteer. It glistened threateningly when she held it up. There was a slight click as the dildos' base locked onto the end of the rod and then she flicked a switch. Turning a control knob caused the machine to give a low hum and the steel bar slid smoothly forwards then backwards. As she rotated the knob its speed increased until the box was making a distinct thudding sound and the trolley was shaking where it stood. As the dildo slowed and came to a halt there was an expectant hush in the room.

"Right young lady I think we'll make a start." With an amused glint in her eye the older woman moved the trolley forwards. Lisa squeaked when she felt the tip of the dildo press against her pussy. Fingers carefully spread her labia and then the false cock was nudged into position, it's bulbous head shrouded by the very wet folds of the quivering vagina.



Then it began. Lisa moaned helplessly and tightened her hands into fists as the red invader pressed insistently forwards. Her vaginal opening stretched into a perfect pink circle and gripped the crimson shaft as it gradually slid inside her. As the boys watched excitedly Miss Johnson inched the dildo very slowly into the gasping "schoolgirl. Feeling the soft walls of her vagina stretching to accommodate the artificial thickness caused Lisa to groan with pleasure. It was only when the thing was fully embedded that she managed to open her eyes. Immediately she flushed with embarrassment. The boys were watching intently, watching every detail of what was being done to her. Her growing sense of shame and vulnerability aroused her even further. Then the teacher turned towards the class and began to describe what was going to happen. It gave Lisa a chance to "savour" what was about to come. The prospect had her trembling with anticipation. Discomfort and severe embarrassment had already moved her mentally to another level. Being turned on and used was all that mattered now. She was a slut. A shameless slut that wanted to be fucked, that wanted to be fucked hard in front of a roomful of teenage boys. A flood of sticky secretions oozed from her vagina and she moaned with unsuppressed lust.

".as you can see your classmate's already highly aroused by her predicament. It won't take very much to push her over the edge." With that the dildo began to slide from the wonderfully tight tunnel before slowly penetrating the naked helpless woman once again. It slid out and in and out and in. Lisa gasped as the unyielding rubber cock produced wave upon wave of delicious sensation in her hungry pussy. Gritting her teeth failed to stop the sounds that began to flow from her mouth,

"Oh God! Oooooooohhhhh yes! Mmmmmmm! Yes! Ahhhhh!" Then she began to pant as the dildo speeded up, her bottom lifting and clenching as she met the intoxicating thrusts. It pounded into her for a few seconds before slowing almost to a stop.

"Noooooo! Ooooohhh Miss! Please! Do it harder! Harder! Oh pleeeeeease!" she begged the giggling schoolmistress. Involuntarily her hips writhed and bucked on the black leather as she tried to impale herself fully on the rubber penis.



By altering the speed of the shaft as it worked effortlessly back and forth in the soaking vaginal tunnel Geraldine Johnson was able to spur the helpless younger woman to the brink of orgasm several times. Lisa cried and begged and pleaded each time the false cock slowed but despite this teasing variation in penetration speed her shrill cry filled the room when inevitably she started to come. The climax arrived amid much jerking and squealing and moaning. She was no longer aware of her watching audience. Once the tremors and muscular spasms had passed however she opened her eyes and was immediately overwhelmed with humiliation. Between the boys and teachers an animated discussion was taking place. Almost as if she wasn't present they were describing and talking about her reaction to the dildo. Her face burned with shame as they laughed and joked about her most private of moments.



"Well young lady," said Miss Johnson as she looked down at the trembling "schoolgirl", "you're certainly making an exhibition of yourself today. Quite the little slut aren't you?" Lisa was trying her best to keep still. Fully embedded in her slippery hole the dildo was motionless and as much as she hated herself for doing it her hips were continuing to roll from side to side. She couldn't help herself. Each movement caused a little moan to escape her gritted teeth as her pussy pulsed greedily on the rubber shaft.

"Gentlemen, I'm afraid the clock is against us this afternoon. We'll just have time to demonstrate external stimulation then you'll have to go for your evening meal."

She looked at their expectant faces then calmly reached out and slapped Lisa's pubic mound sharply. The younger woman squealed loudly and jerked on the false cock inside her. Then the smirking schoolmistress picked up the largest of the three dildoes and held it up in front of Lisa's very red and sweaty face. She bent over and spoke quietly into the shaking girls' ear,

"Don't think you've escaped this beauty you little tart. I'm going to make sure you feel it before you leave tomorrow evening." Lisa shivered at the threat and icy cold look in the older woman's eyes.



Slowly the red dildo thrust into the smooth walled tunnel then slid outwards before thrusting forwards once again. The machine fucked with a constant steady rhythm drawing a gasp each time it stretched the wet confines of the helpless vagina. Lisa panted and moaned as it slid remorselessly back and forth inside her. At the juncture of her shiny pink labia her swollen clitoral bud stood stiffly to attention.

"As you can see the clitoris is fully engorged with blood," said Anita Palmer, pointing at the obviously inflamed nub of flesh.

"Miss Johnson and I have agreed that each of you should examine it, even if only for a few moments. We'd like you to observe your classmates' reactions carefully when you're touching her."

"Ooooohhhh! Miss! No please. I couldn't bear them."

"Stop making such a fuss you silly girl!" snapped the school nurse as the boys crowded eagerly forwards.