Alex, her boyfriend

Stacy ran from into her bedroom and checked the clock. It was just past noon - Shit! She was supposed to be meeting up with Alex today!

The knocking came again, followed by muffled call from outside.

"Just a second!" Stacy yelled, throwing on a shirt and shorts before heading to the front door.

Alex looked surprised when he saw her. "Hey, Stace. Oh. Are you okay? I thought we were going out today?"

Stacy looked at her boyfriend, framed in her front door and dressed up for their date in the city. He was... nice, by and large. Not especially smart or good looking, they'd dated in the same way as anyone else who didn't really know what they were doing.

A chill ran up her spine.

Something attacked me, she tried to say, but the words never came. Instead, she felt her body step forwards, grabbing Alex by his shoulders and pulling him inside.

"Whoa, what's going on?" Alex said, bemused but curious.

I can't move! Stacy tried to scream, but her body smiled and led Alex silently from the front door to the bedroom. Inside, a pit of dread opened up in her stomach as she realised what was happening.

The curtains were still drawn from that morning, turning the midday sun into a warm glow that barely lit the room. Stacy's body grabbed Alex, turning about him and pushing him onto the bed as it shut the door.

Alex looked up from the bed with a cautiously hopeful expression.

"Happy two-month anniversary?"

No!

Stacy felt herself move over Alex, felt his hands reach up and grab her breasts through the thin fabric of her shirt. She hadn't put any underwear on - hadn't had time - but she knew that in Alex's mind, this would leave no doubt that she was in the mood for sex and nothing else.

A soft moan escaped her lips as he squeezed, mashing his hands awkwardly against her chest in the limited space between their bodies. He was young - they both were - and while she'd never considered him bad in bed, he'd never rocked her world, either. Now she was whimpering like a depraved slut, pressing herself into his hands as unwanted bolts of pleasure ran up and down her body.

She felt one hand descend and unzip her pants, Alex shaking with desire as he realised Stacy wasn't wearing any panties.

"H-holy shit," he whispered.

Stacy's voice crawled out through her lips in an animal purr, her body rubbing its face against his encouragingly. Stacy herself, trapped in her own body, fought to resist, to somehow communicate to Alex that things were very fucking wrong and that he needed to stop himself - stop her - and get a fucking grip.

Her mind reeled under the sensation of a finger hesitantly exploring her pussy, already drooling and hungry for more. Stacy felt her body press itself against Alex as he blindly fingered her, emboldened by her hungry embrace and the noises she made as he began to pump his finger in and out, in and out, in and out.

Stacy's climax came too quickly, flooding her mind after bare seconds of being penetrated and draining her will to resist. Even if it hadn't, she wouldn't have been able to stop her body sitting up with a seductive grin and kissing Alex passionately in the artificial twilight.

She had hoped her tongue would crawl down his throat, not only to break the mood he had so willingly fallen into, but to indicate - finally - that things were not okay and God damn it, she needed help!

But nothing strange happened, at least not as far as Alex seemed to notice. Stacy's body broke the kiss, pecking him lightly on the lips before pushing him down onto the bed and crawling backwards down his chest.

Stacy's horror peaked as her hands began to unzip his fly, and she hoped that the sudden bout of nausea might cause her body to react, but it simply smiled up at Alex along the length of his body as it took his erect cock in one hand, licking it from base to tip with every sign of enjoyment.

Alex groaned, letting his head fall back and lying limp as Stacy ran her tongue across every inch of his dick, screaming internally and fighting with every ounce of her willpower to stop herself. Ignoring her silent pleas, her body raised her lips over the head of Alex's cock and kissed it before descending slowly, taking the entire shaft in up to the hilt.

Stacy gagged, her body's expression of lustful enjoyment reassuring Alex who glanced up with a worried look on his face. With excruciating slowness, Stacy felt her neck raise and lower itself, her tongue finally extending to its full length and wrapping around Alex's shaft like a snake.

She looked up at him, hoping that he might notice something amiss, but Alex was too far gone, drifting along a current of pleasure and either unable or unwilling to question the strange sensations emanating from his crotch.

She wanted to cry. In silence or out loud, she just wanted the freedom to cry as she was **** to go down on her boyfriend and was relieved when she felt the cock pop out of her mouth, only to see the top of her tongue open like the bud of a new flower.

Before Alex could look up, Stacy's head was **** down again, this time her tongue-mouth enveloping his entire dick and squeezing it in time with her thrusts.

Alex arched his back, his hands clutching at the sheets in response to the sudden ****.

Stacy could hear him crying out, swearing in amazement, but her mind was dominated by the sucking, squishing noises coming from her mouth and the sudden burst of pleasure that emanated from it. It was as if her tongue had become another pussy, growing out of her mouth like a tentacle and sucking itself down onto the hardness penetrating her face.

Her tongue began to push and pull itself out of sync with her head movements, speeding up until the sensation of pleasure filled her entire head like a numbing mist. As though a million miles away from her own body, she heard a distant moan as Alex grabbed her head and convulsed, a warm rush of liquid squirting into Stacy's skull.

Stacy felt her tongue gulping down her boyfriend's cum, the warmth passing down her throat into... she had no idea how far into her body the creature went. Her pussy - her real pussy - twitched in sympathy as her tongue trembled with its own, private orgasm.

God, please tell me it hasn't reached all the way down there...

Alex's softening dick came free with a slurp as he lay limp and panting on the bed. Stacy's body raised itself alongside him and nuzzled his neck.

"Holy shit, Stace," he gasped. "Where the fuck did you learn to do that?"

Stacy hoped and prayed that her total silence would eventually get through to Alex, but the God damn idiot seemed satisfied with a smile and a shrug. She lay there with him, gently caressing his body for several minutes until a subtle change in his breathing told her that he'd fallen asleep.

As soon as she realised this, her body shuffled its way off the bed and stripped, walking naked into her bathroom. It stood in front of the mirror, a fascinated expression on its face as it examined itself from one angle after another, tracing Stacy's hands across her breasts and squeezing until it hurt.

Get out of my fucking body! Stacy screamed in her head.

Her reflection raised an eyebrow and smiled, waggling a finger in admonition.

It can hear my thoughts!

The other Stacy's face broke into an evil grin, raising both hands to her breasts and jiggling them playfully.

These are mine now, she seemed to say. Everything that was yours is mine.

You can't stay silent forever, Stacy fumed. He'll realise there's something wrong soon!

Stacy felt less than confident about that claim, but her reflection looked thoughtful. Stacy dared to hope that it was considering leaving her body, but instead it smiled as though a delightful idea had occurred to it.

Something thick lodged in her chest. Stacy felt a **** mass suddenly form and begin to worm its way up past her breasts, creating a visible bulge in her neck as it crawled, inch by inch up her throat. The other Stacy seemed unperturbed by the sensation, opening her mouth with a grin as her tongue swelled to twice its thickness.

The bulge continued down, down until it reached the tip of Stacy's tongue, which opened at the tip to reveal something thick, long and grey, which wriggled its way free and landed softly in Stacy's cupped hands. Her reflection raised the newly born worm up to one breast and cradled it gently as though nursing a...

No. No! Oh, God! Stacy's mind recoiled in disgust, but her body's smile confirmed what she feared.

The thing in her mouth had just given birth.

Her body laughed silently at her despair, raising the newborn to its lips and kissing it tenderly. A thoughtful expression overcame its features, and it pointed to the worm with one eyebrow raised.

No... Stacy pleaded. Please, don't...