"...oh, I know all about that!" Sheila snapped. "The Sisters say it's like Pinocchio. Whenever a man's lying, his...his...pokey-thing gets bigger. The more he's lying the bigger...." She stuttered to a stop, aware that the five other girls sitting in the convent school's musty, candle-lit attic room were snickering at her.

She looked at the other girls in the secret room that had been adorned with scarves and cast off fabrics until it resembled a bohemian boudoir created by piles of unused mattresses and other paraphernalia.

"It's true," Sheila pouted, "the Sisters say it is." Fiona, who at 13 knew everything there was to know about anything worth knowing, stifled her own amusement then sighed. Sheila seemed immature even for eleven and shouldn't have been included but she had threatened to tell the Sisters about the secret meetings where they discussed sex and men and all the other things the Sisters truly did not understand and so they had been forced to let her tag along. She wondered what to do about Sheila, then brightened. If Sheila wanted to believe in Fairy Tales, she'd give her a good one to believe.

"It's only half true," Fiona said, leaning forward and speaking in a hushed, conspiratorial tone. "The Sisters don't want you to know the whole story because you might become a..." she hesitated, wondering just how much she could shock Sheila to start with. She decided to start off slowly. "...you might become the kind of girl who might lose her virginity before marriage," she finished a bit lamely.

Even that mild statement seemed to shock Sheila but Fiona sensed there might have been a hint of horrified excitement in Sheila's reaction as well. The close air and flickering candle always had that effect on them, heightening their sense of anticipation and the thrill of the forbidden, no matter what the topic. "I will tell you the whole story," Fiona pronounced, settling herself comfortably. She waited until she had everyone's attention.

"Once upon a time," she began, "ever so long ago, there was a beautiful princess who was being courted by a handsome but wicked prince, and two sisters that were witches.

"These weren't your usual wicked witches. No, they were just your garden variety witches that made healing potions and delivered babies and worked weather magic and cast other small spells. In that way, they were like twins. But in other ways, they were like day and night. One was pretty and sweet and the other was, well, unattractive and a bit crude. And it was well known in the village and surrounding areas that if you wanted a spell for revenge or love or misfortune for another, you did not ask the pretty witch; you asked the other. But they were sisters so they lived together in a small cottage just outside a village near the wonderful castle where the beautiful young princess lived.

"One day, when the pretty witch was out helping with a birth, the handsome prince came to the cottage. He was in a terrible state. He had just come from the castle where the beautiful young princess had rejected him.

"'But I love her and want to marry her,' he moaned, as if heart-sick. 'Can you make me a love potion to win her heart?'"

"Now, the witch knew he did not love the princess and the Prince was known to be a scoundrel with many children conceived, as they said, on the wrong side of the sheets. She was about to tell him she would do no such thing but she felt an unfamiliar stirring within her that made her pause. He was very handsome and she, despite her sister's company, was lonely. Very lonely. Without really considering her actions, she decided to make him fall in love with her.

"'I will help you,' she said, 'for true love must not be denied. I will mix a potion that will make you irresistible to all women,' she said. 'The princess will be unable to deny you anything you ask. Anything,' she added a lewd smirk, suspecting that the prince was not a kind and gentle lover.

"At that, the prince could not suppress a wicked grin and the witch then knew for certain that things would go ill for the princess, the village and the kingdom if he got his way. And so she told herself that what she was about to do was really for the villagers and the kingdom.

"She, of course, did not mix a potion to make the princess fall in love with him. Instead, she mixed a potion that would make him fall in love with the first woman he saw.

"Smiling, she handed him the potion and positioned herself near her sleeping couch at the far end of the cottage. He drank the potion down greedily but, just as he swallowed the last drop, the pretty witch came into the cottage. The open door hid her sister from the prince's view and she happened to stop squarely in front of him, momentarily surprised at his presence.

"Of course, the handsome prince fell instantly and hopelessly in love with her. He fell to his knees, professing his undying ardor for her.

"Unable to bear her frustration and disappointment, the ugly sister stormed out of the cottage. And, true to her nature, she resolved that if she could not have the Prince, neither would her sister. She quickly cast a spell on the Prince that made it impossible for him to get an erection if he spoke the truth. And since he was truly in love with the pretty witch, he would never be able to consummate his love.

"To make her revenge more perfect, she added that whenever he lied, he would get a great, throbbing erection that would not go down by itself and that he could not satisfy by himself."

Fiona paused and glanced around the small enclosed space. All the girls were glassy-eyed in fascination and even Sheila's hand had begun to creep up towards her budding nipples.

"As you can imagine, the wedding night was a disaster. The prince swore his love but could not demonstrate it. In shame, the pretty sister fled into the forest to spend her wedding night alone in a cave.

"Seeing this, the ugly sister came back to the cottage. She pretended to console the Prince while making him a drink that would make him sleep for a short time.

"When he awoke, he found himself naked, gagged, and bound to the bed with the ugly sister standing naked before him. She held a long, thin hazel switch in her hand.

"As soon as he opened his eyes, the ugly sister began whipping him viciously. His cries were muffled by the gag and he could only plead with is eyes.

"She stopped after a while, straddled him and whispered in his ear, 'I will stop if you tell me you love me.'

"He shook his head vehemently but she cradled his face in her hands.

"'I know that you love my sister,' she said. 'I want you to lie to me. I want you to lie and tell me that you love me.'"

"His eyes grew wide and, even though the witch was ugly and not at all attractive, even naked, he was a man and she was a woman. And even as he though about speaking the words in order to stop the pain, he felt the throbbing of his member as it grew and grew until it stood proudly erect like a tower on the castle.

"She loosened the gag. 'I love you,' he croaked, the urgency of his need leaving him barely able to speak. And as he uttered the lie, his manhood grew even bigger and stiffer, throbbing with an urgency that threatened to drive him mad.

"The ugly witch, feeling the heat of his need pressed against her backside, smiled. Without hesitation, she lifted herself up and took him inside her, nearly screaming with the pain and pleasure because she was, until that moment, still a virgin.

"She rocked back and forth on him, riding him like a champion horsewoman on a cross-country steeple chase. He groaned and thrashed against his bindings, his eyes glazed with passion, his muscles rippled and tensed like a stream running over a stony bottom.

"She kept him at the edge of ecstasy for what seemed an eternity and, when he finally came, he nearly tore the bed apart with his wild thrusting. He filled her inside with his hot juice but the witch, still inflamed with lust, begged him to lie to her again.

"'I long to kiss you,' he said and felt his manhood swell up inside her again. 'You are the most beautiful woman I have ever seen....'

"That lie, being such a big one, caused his shaft to grow to such length and girth that the witch on top of him squealed in fright and had to dismount.

"She knew that that it would not go down by itself and, if he told the truth to make it diminish, he would not be able to make it grow again that day. But she was not finished with him. Her only recourse was to take matters into her own hands.

"She knelt between his muscular thighs that were twitching with his need and took his massive, thickly veined member into her own small hands that could not encircle it completely and began slowly stroking it. He groaned with pleasure and that inflamed her even more. Unable to contain herself, she licked the hot, throbbing head of his cock then took it inside her mouth, savoring the silky softness of his skin with the steel hardness beneath it. It was so big that even when it pressed against the back of her throat, she could still slide both her hands up and down the slick, hot shaft."

Fiona paused briefly, noting with satisfaction that even Sheila was gape-mouthed, her eyes half shut and her hand sliding down between her legs.

"Hearing his moans of pleasure drove her to even greater frenzy. Still pumping his shaft with both hands, she bent over further to lick his large, hairy balls. He arched his back and groaned louder. Tentatively, she took one, then the other into her mouth. He shuddered with pleasure and she licked his balls thoroughly, slowly working her way down to their base, just above his ass.

"His thrashing increased and she could feel his cock beginning to spasm in her hands.

"She quickly took him back into her mouth and he came instantly, filling her mouth and throat with hot, creamy juice. She swallowed as much as she could but his second load took her by surprise and spattered across her face. Then the third load shot into her hair that was draped across his thighs.

"She sat back in momentary shock but then savored the feeling of his juice running down her face and dripping from her jaw onto her breasts. She felt that he had marked her as his own, as animals mark their territory, and that no other man would ever have her and that he would have no other woman.

"He lay on the bed, exhausted, sweat-soaked, gasping for breath. After a moment, he grinned wickedly. 'I hope you're done,' he said, 'because I wouldn't soil my cock by putting it in your cunt!'

"His cock sprang to life again and she feverishly bent to loosen his bonds.

"He grabbed her roughly and threw her onto her belly, pulling her arms behind her and levering her legs apart. She whimpered in need and excitement and he wasted no time ramming his cock deep into her wet, gaping cunt."

Fiona did not have to look around to know the effect of her story. She could hear the other girls nearing climax and even Sheila, eyes closed and head thrown back in abandon, was quietly gasping as her hand worked beneath her nightdress.

"He fucked her like a stallion," Fiona continued. "Bucking and rearing like a horse just being broken, he pressed her into the bed as he pounded his cock into her willing cunt. Her wails and screams of pleasure were nearly drowned out by the loud slapping sound made by his body as it pounded against her helpless, upturned ass. Again and again he rammed his hot, throbbing cock into her, filling her completely and thrusting all the way up inside her until she screamed in pain and pleasure. He pulled her up to her knees, grabbing her hair and pulling her back against him harder and harder and harder until she came with such an explosive intensity that she could no longer even scream out her pleasure. She was a mindless creature, swept away by wave after wave of pleasure that rippled through every inch of her body until she thought she would die of ecstasy.

"He pulled out just as he came, spraying her ass and back with his hot seed before collapsing in a heap beside her, breathless, sated and more than a little terrified. Yet he had no time to ask about what had happened before fatigue overtook them both and they slept."

Fiona stopped, listening to the sighs of the girls as they savored the afterglow of their own sexual release. She shifted her position to relieve the pressure on her own throbbing pussy but she would not allow herself to be distracted before she finished the story.

"So great had been their passion that night that they slept, entwined in each others' arms, until mid day when the pretty witch returned, red-eyed and disheveled from her night in a cave in the forest.

"You can imagine her shock, horror and outrage when she saw her husband and sister, naked, on the bed.

"The ugly sister awoke almost at once and, still addled by sleep and the night's pleasures, fell to her knees before her sister and pleased for forgiveness, spilling out all the details of her plan and how it had all gone wrong. She saw her sister's anger diminishing and so did not tell her about the spell she had placed on her sister's husband.

"But it did her no good because, as soon as the Prince awoke and saw his bride standing like doom at the foot of the bed, he quickly protested that it was not at all what it seemed and that nothing had happened.

"Without fail, his manhood swelled at the utterance of that lie and his virgin bride knew the truth.

"The ugly sister, sensing an opportunity, gathered her clothes and, still naked, rushed out of the cottage and into the safety of the forest.

"The pretty sister, also sensing an opportunity, quickly shed her dress and joined her husband in bed. 'Then,' she said, 'you must not do to me what you did not do with my sister last night.'

"The light of understanding came to the Prince's eyes and he grinned a wicked grin. 'I did not,' he said, 'use her body for carnal pleasure.'

"His bride gasped as his manhood grew even larger and she quivered with excitement. 'And you must show me everything you never wanted to do to me,' she said. 'And you must show me repeatedly until nightfall.'

"And so the prince, eager to please his bride, lied to her the whole afternoon and well into the evening until she could bear no more pleasure.

"But despite the great pleasure he had given her, his bride yearned for him to tell her he loved her. But she knew that if he did, his manhood would shrink away and there would be no more pleasure for either of them.

"And so she did what any self-respecting witch would do, she cast a counter-spell so that he could never get an erection if he told a lie and would always get that great, wonderful, woman-pleasing hard-on whenever he told the truth.

"The Prince was overjoyed at being able to express his love for his bride and they lived in contented bliss for most of a week.

"But the other sister, her fires of passion having been awakened, could not bear to be without her lover. And though she knew she could arouse him by having him tell her the truth, she did not want to hear the truth, did not want to hear that he did not love her or want her or find her desirable in any way or that she was nothing but a fuck hole for his lust. And so she came up with a plan.

"One bright Spring day, when the pretty witch was out, her sister returned to the cottage. The Prince looked away in revulsion.

"'Do you love me?' the ugly sister demanded.

"'I find you repulsive!' the Prince snapped without thinking. His manhood sprang immediately to attention and he moaned in an agony of desire and despair.

"The ugly sister smiled victoriously and cast aside her cloak, under which she was naked, and again took her pleasure with him. He was even rougher with her this time, slapping her face, spanking her, binding her and using her savagely as if to break her of her desire for him. But no matter what the insult, what the humiliation, what wicked thing he could think of, it only drove her to a greater frenzy of passion.

"Still, the wicked sister grew tired of the insults and the truth and again commanded his cock to rise only when he lied.

"And every time he his cock softened, she would trick him into a lie and the blood would rise in him and, being a man, he was helpless to resist -- again and again.

"At length, when she was sated, she asked him whether he truly found their coupling so disgusting.

"He hesitated to answer then admitted that the wicked sister was a far more exciting lover than her beautiful sister.

"At this, the wicked sister wished that he could get an erection even when he told the truth because his confession had inflamed her once again.

"This time, however, his bride caught them in the act. There was no discussion. She cast the counter-spell so that only truth would rouse his passion.

"Then she demanded of her husband whether he truly did find her sister more exciting. 'No,' he insisted, but his manhood proved the lie of his statement and the pretty sister, for the briefest moment, wished that he could please her even when he lied. Before either sister could fully realize what she was feeling, the wicked sister, unwilling to relinquish what she felt was rightfully hers, countered her sister's spell. Back and forth it went, well into the night, as spells and counter-spells made the air sizzle and crack as each sister strove to make her spell the only one that held sway over the Prince.

"'With truth!' 'With lies!' 'With truth!' "With lies!' they battled back and forth for hours, drawing every ounce of strength they possessed to create the ultimate spell until they both lay exhausted, barely able to lift a hand to cast the spell. And yet, somewhere in the middle of this arcane battle, they had become confused by fatigue and their half-formed longings of before mixed with their conscious desires.

"At long last, with a final breath, they uttered 'With truth' and 'With lies' together. And with that final effort, they both died, sucked dry by their battle. And in that instant, both spells mixed together and took hold forever -- and the Prince discovered that his erection could be invoked by either truth or lies. Delighted, he left the village and lived a long and happy life seducing the wives of powerful men and even a few maidens with whom he was truly smitten.

"Of the beautiful young princess, little is known other than the rumor that the Prince eventually enjoyed her attentions as well, after she had married a pleasant but boring petty king from the next kingdom.

"But," Fiona said suddenly and forcefully, "and this is the important part, so powerful was the magic wrought by the sisters that night that it spread far beyond the cottage, far beyond the village and the circling mountains, and far into the heavens so that it fell with the rain all around the world. And because there were none except the Prince and the sisters who knew of it, there was no one to counter it."

Fiona paused and took a deep breath. The lie she was telling them was probably more true than she wanted to admit.

"And so," she said at last, "the reason men get hard-ons when they lie, and when they tell the truth, and any time they're near a girl who shows even the slightest possible interest in fucking them is because..." she paused, looking slowly at each girl in turn, "...that's what women want. And that," she added with a tone of finality, "is the whole truth of it."