A/N: Well, before you begin reading, I suppose an explanation is in order. So, here it goes. I can't find enough SteinxMedusa anywhere. I've looked and looked, but nobody seems to have written much, not even on other sites. So, after seeing them ALMOST kiss…twice, I wanted to have them go through with it. Just once, maybe Stein could lose himself and have a bit of interesting 'fun' with Medusa. Setting is at the School-Founding Party on Christmas Eve.

Stein unfolded his arms from his chest and tried to think of a way to relieve his boredom. Nobody seemed to want to dance with him, which generally wasn't surprising because he was a bit of a recluse and had a reputation for being an odd one. Not to mention the fact that he was literally held together by stitches didn't help that image.

But, he had expected somebody to at least talk to him! With a sigh, he strode over to the table nearly overflowing with snacks and plates and discarded napkins, forks, spoons, and the like. He found the punch bowl and poured himself a glass of red liquid. Funny that it would remind him of blood, despite it being such a sweet and light drink in comparison to blood, heavy and metallic. Stein downed the glass of punch and felt something begin to gently crawl up his shoulder. He turned his head and found that Medusa was trailing her fingertips up the back of his labcoat.

Stein decided to humor her and play along with whatever game she had in mind for him, at least for a little while. He could stop whenever he wanted to. With a slight grin, Doctor Stein refilled his glass of punch and turned around to face Medusa, who looked quite appealing in the black dress that hugged her curvaceous body. In contrast to her provocatively low-cut dress, she wore an innocent smile on her face, hands clasped together at her waist in a cute manner.

"Doctor Stein, I'm almost surprised you didn't sit in your troll cave the entire night. You actually made it to the party," she teased.

"Well, I'd have been here sooner, but you know how those lab rats are? Never want to go down easy," Stein replied with a slight smile, raising his glass to her before downing it in a long drag. Medusa giggled softly and Stein caught the momentary leer she gave him. She sighed softly and poured herself a glass of red punch. Medusa scooped out the ice cubes and leaned against Stein while she sipped at her drink. After a moment, she stopped sipping her drink and stared into it.

"Somebody spiked the punch again," she stated almost boredly.

"And you thought that would change?" asked Stein as he poured himself another glass. Medusa gulped hers down and started for the door. Stein downed his own glass immediately and grabbed the woman's wrist. He pulled her into his arms and grinned widely, giving her a look he thought would make him look borderline drunk or tipsy.

"Doctor St-"

"C'mon! Let's dance," Stein interrupted before she could protest in earnest. Medusa didn't look at all flattered or pleased, but went with him anyway. Stein hadn't danced in well over six years, but he hadn't lost any of his skill, like riding a bike, he mused to himself. The odd pair began to dance at Stein's lead, and they fell into step flawlessly, mechanical automatons built to fit one another.

He swung Medusa left and right, spun her like a ballerina, dipped her low enough to make her worry about the lowness of her dress' neckline several times. Stein made sure to look drunk enough for the moment, allowing a little playfulness as Medusa followed his footsteps for a long while. Medusa looked as if she might start enjoying herself and it was at that point that Stein slowed things down. He grinned widely at Medusa and she leered back at him. It was like the dancing equivalent of blue balls, and he'd taken her totally off guard.

The effect didn't last long, however.

"You really think that a silly little dance will stop me?" she questioned, eyes turning black. Her irises tinted deep gold.

"No," Stein said with all seriousness. "But a kiss might," he sneered.

Medusa leaned in.

"Care to test that theory, Frankenstein?" she asked with a demeaning leer. Her tongue shifted to a little arrow as it snaked out of her mouth.

"Only if you think you're able to meet my standards." Stein closed in further and their foreheads touched. The mad doctor could feel Medusa's breath on his face, cold and unforgiving. He knew that this little game could stop any time he wanted it to. It was all a matter of choice. Either she was going to chicken out and go on with whatever she was planning under his suspicious gaze, or he could get her to delay those plans for a while longer. He could stop whenever he wanted to.

Before he knew it, Stein felt Medusa's lips against his, her black vector-tongue rubbing against his. He could feel that the thing was cold, but not sharp like he had expected it to be. It was rather docile, bending against the contours of his own stitched tongue. Stein felt her hands on his and Medusa pulled them gently. Steins came to rest at the small of her back and he leaned into their kiss. Medusa moaned softly into his mouth and Stein heard her speak softly to him in a gentle, yet demeaning tone.

"I don't think you have the guts left in you to take me back to one of the guest rooms," she whispered. Stein bit her tongue, which retreated back into her mouth. She mad doctor winked.

"One night in a bed says I do," he chided playfully. Medusa hooked her slender arm in Stein's strong one and she pulled him away from the outskirts of the party. As soon as they had rounded the corner, Stein swept her into his arms and carried her bridal style all the way down to the guest rooms. As he nudged open one of the doors with his foot, Medusa slipped out of his arms and nearly threw him against the wall. She stalked towards Stein and a cruel grin crept upon her face. Her eyes turned black again, and her irises gold.

"So, the lab rat thinks he can toy with a coiling snake?" Medusa scoffed as she put a hand on the wall and a leg between his. She raised her knee against his leg all the way up to his growing arousal. Doctor Stein put his forehead against hers and chuckled.

"I have a few little tricks up my sleeve," said the doctor as he produced a scalpel from within his sleeve as a warning. Medusa pouted her bottom lip and raised his hand to her cheek, barely placing the instrument of surgery against her pale skin. It pressed hard enough for a single drop of blood to roll down her cheek.

"I bet you're just dying to split me in half and explore my insides, huh?" she teased sensually, slipping his coat off his shoulders with her left hand. Stein tossed the scalpel away with the flick of his wrist and leaned in for another kiss. This time, her tongue didn't change shape as it flicked out and touched his nose.

"And you expect something more?" Stein asked. Medusa nodded and Stein shrugged, putting one hand at her hip and started to unwind her braided hair, letting it fall to either side of her body. With a low growl, Stein kissed Medusa, thrusting his stitched tongue against her teeth. Medusa wrapped her arms around his neck and pulled them closer together, crushing his lips with hers in a fierce show of desire. Stein did the same as he pulled her hips to his. He slid his tongue across her teeth, baying for entry into her mouth.

She granted him what he desired and Stein felt her soft and wet tongue against his own. He licked the roof of her mouth, savoring the sickly sweet taste of the spiked punch mixed with her natural flavor. She let out a soft moan again and it drove a chill down Stein's spine. He shivered with pleasure.

But he felt something very odd as soon as the feeling passed. It felt like something…like something was crawling down his throat. With a smirk and an eye roll, he pulled away from the kiss with some effort and grabbed the black vector arrows running from her mouth to his. He didn't know what was so appealing about the sight of black streaks leaving her smug little smirk, but appealing it was all the same.

"You caught me," she admitted. Stein pulled the vector arrows out of his throat, and found that she had gotten a surprisingly-long distance in. She had reached about half way down.

"I love a girl who knows I don't gag." He had to admit, she was a very sly snake. Stein let the arrows recede back into her mouth and followed them in with his fingers, pushing all the way to the back of her throat before he lost the slithering vector arrows. As he slid his fingers out of her mouth, she sucked on them sensually, nipping his fingertips as they left her lips.

"I love a man who remembers I don't either," Medusa returned with a suggestive look. Stein lifted her up by her thighs and deposited her onto the nearby bed. He slowly pulled off his lab coat and shirt. Medusa pulled the thin straps of her dress from her shoulders and grinned that devious grin of hers, curling her index finger for him to join her on the bed.

Stein removed his boots and socks before complying. He loomed over her slim body, eying every little dip and curve there was to her form. He didn't have qualms with admitting that she was indeed beautiful. That was part of the reason had had gone this far with her. Mostly, he guessed, it was probably because she was nearly as screwed up in the head as he was. Well, I take that back, thought Stein momentarily as he remembered the actual screw that was in his head. I'm a bit worse off than she is in that case.

"I know you want me to screw you," Medusa purred into his ear. Stein's heart skipped a beat. Alright, she really was as sly as a snake. She'd caught him completely off guard with that remark. Stein regained his composure and proceeded to pull down Medusa's thin dress. He peeled it away from her torso and down to her curvy hips and then she removed his glasses, depositing them on the nearby nightstand. Stein literally tore off her bra and her breasts bounced free. He chuckled.

"You've got all the right curves to be a real snake," he remarked as he cupped her soft breasts. And this time, when he touched her, Medusa looked genuinely pleased. There was no insincerity to her tone when she let out a very faint moan. The woman's hands roved over Stein's muscled chest, tracing the long arcs of stitches and scars that crisscrossed his torso. Stein, feeling that she was beginning to unbuckle his belt, flicked his tongue over one of her nipples and she stopped. Her hands immediately moved to his shoulders and pulled him down further.

"If you wanna get eaten by this snake, then do that again," she warned. Stein latched his mouth onto one of her large breasts and kept his hand on the other, massaging it slowly and pinching her nipple between his fore and middle fingers in slow intervals. He swirled his tongue around her nipple, eliciting moans of pleasure and lust from her soft, pink lips.

Stein rose from her chest for a few moments, eying Medusa's wanton expression, and slipped his off hand beneath the small of her back, pulling her towards him. He returned to her ample chest with his mouth and she moaned again. He felt her navel against his chest and it roused him to press harder against her. He could feel a certain tightening in his pants that he knew would need to be fixed soon, through more than a few unorthodox methods. Stein bit down lightly on her nipple and Medusa bit her bottom lip to keep from crying out, the snake tattoos on her arms and back shifting wildly.

"Enough to get me down your throat?" Stein mused playfully as he removed himself from her chest. He was a little reluctant to leave, but hell, he had a buffet in front of him. It would be a waste just to stick to one entre to whole time, right? Medusa glared at him for a moment before a vector arrow emerged from between her closed lips. She sighed.

"Fine." She pushed him off and roughly rolled him onto his back. She tore off his belt and pulled down his pants. Medusa looked up at Stein slyly as she pressed down on the tip of his pulsating erection, only hindered by the thin barrier of his boxers. She pulled those away and grinned at Stein, licking her lips seductively.

"Well…when I said 'down your throat' it was a metaphor, not that I'm complaining," Stein deadpanned. Medusa didn't seem to care at all as her tongue lolled out of her mouth and gave him a long, slow, wet lick. Stein ground his teeth together and Medusa dipped her tongue into the tip of his glans, a demeaning look written all over her face. Golden eyes laughed at him with a predatory gleam.

After a short stalemate, which Stein lost with utter entirety, Medusa's sank down slowly, letting him feel every inch of his throbbing arousal enter her mouth. Stein didn't realize it at first, but Medusa had gone down all the way to the base. He only managed to when he felt her go down three times in a row without fail. He furrowed his brow and looked down at her, finding that she wasn't just using her natural resources to please him. One of her vector arrows was coiled around his hard appendage, stroking him up as he left her mouth, and down again as she took him to the back of her throat. It gave him a cool sensation followed by the stark contrast of her warm, wet mouth.

Stein felt a wrenching urge beginning to form in the pit of his stomach and he suppressed the feeling quickly. There was no way he'd give out after only this long. He wanted to savor and enjoy this. He had Medusa's pretty little head bobbing up and down it his lap! Only an idiot would let it end right here.

He enjoyed this and wanted to draw it out for as long as possible, even though he had something much better waiting for him afterwards. Maybe the snake would let him perform a few…stranger positions when they got down to it. With a grin, he let out a deep breath and a chill went up his spine. He realized that Medusa had wrapped his wrists in vector arrows and sent them up his arms, winding around him in circles.

This time, Stein didn't stop the arrows as they traveled up his shoulders and reached his neck. They traced his jawline on either side of his face and he found their touch to be rather arousing. Nothing like the naughtiest stuff in the business to get you off, Stein mused as one arrow found its way into his mouth, the other tickling his chin. Stein could still feel the incredible pleasure of Medusa's head bobbing in his lap. She felt like some unearthly being right now. Stein wanted to ram his hips against her face, but that might turn her away, and he most definitely didn't want that at the moment.

The arrow in his mouth wrapped gently around his tongue and massaged the pink, stitched organ. Stein closed his eyes and threw his head back. He briefly wondered how long Medusa had been doing this, or how many times she had done it. He guessed it was more than a few, but he could care less. Now her tongue was swirling around his erection too. He could barely take it.

Stein realized that he was about to reach his orgasm and arched his back, grabbing two fistfuls of hair on Medusa's head and forcing her down upon him. Much to his surprise, instead of trying to split him open with her vector arrows, she did nothing but keep up the motion of her tongue around his throbbing arousal. Stein shot his seed into her mouth and she looked up at him. She moaned and Stein could feel his eyes beginning to roll back in his head and he pumped his orgasm down her throat. When she broke away from him, she flicked away the string of saliva hanging between then with her tongue.

"I expected at least a warning, rodent. And just for that, I get to take the top," she growled, sitting up on him. Stein realized that her vector arrow was still massaging his tongue. When he tried to speak, the doctor found himself unable to do so. With a grin, he decided it was fine for now. Whatever kept her on course to the main ride. Stein found it amusing that he would be in this kind of situation. Normally he was the predator watching everyone scurry around like little mice avoiding his gaze. Now, Medusa was that predator, a coy snake wrapped all the way around him, staring at him knowingly with her demeaning golden eyes.

Medusa put her hips just above his, placing her hands on his chest to keep herself upright. She wrapped two more arrows around his wrists and pinned them out to either side. Stein didn't care much at all, seeing as the force she had put him down with was easily within the range that his physical strength could take care of. Medusa lowered her hips to allow his erection to press against her drizzling sex. Stein could feel the head emanating from her body, and feel the sweet sensations of pleasure that she was teasing him with.

They both knew this was a bad idea. No, a terrible one. Nothing good could come of this. Even so, between the two of them there wasn't enough willpower to stop at the point. They knew where they stood, and neither was willing to yield to the other.

Medusa dropped her hips to his and grinned with satisfaction. Stein managed to bite back and moan in pleasure as he penetrated her body as far as he possibly could. Medusa threw her head back and began to grind her hips against his, leering down at him.

"Will you admit I've got you?" she asked with a moan. Stein reached forward and put his hands on her hips, pulling them down as he thrust his own up. Medusa cried out and sent him a lustful glare. Stein grinned again and shook his head with amusement. More vector arrows wrapped around his arms and his midsection. Stein was going to lose himself in this bizarre massage-fuck if he wasn't careful. He bit down on the vector arrow in his mouth and it retreated, joining its brethren around his waist.

And then it happened.

Medusa reached down, and with both hands, turned the large screw bolted through his head as far as she could counterclockwise. Stein's entire world froze for a moment, his body enveloped in pleasure from head to toe. He let out a loud moan and thrust his hips up, hard. He held onto her body like his life depended on it and gasped for air. He hadn't had anyone give him a good screw in a good long time. He could barely take that, and another one was probably going to send him over the edge. Stein decided that it was time to begin in earnest. Enough with the easy stuff.

He rolled Medusa onto her back and put his hands on her breasts, squeezing them roughly. He locked his lips against hers, forcing the vector arrows crawling into his mouth, back into hers. He thrust his tongue against the back of her throat and moaned noisily, hips bucking against hers erratically. Medusa wrapped her legs around his waist tightly and her vector arrows retreated back into her snake tattoo, which writhed violently all over her skin. Stein dominated the woman beneath him, forcing her back to arch as he bent over.

"Still think you've got me?" he asked through their kiss.

He tucked his knees under himself and used one arms to lift Medusa into a kneeling position, still thrusting into her body at a quickening pace. At the moment, she was trying her hardest to repel him and take back control of the situation, but she was unable to do so as Stein wrapped both his arms around her back and pulled their sweating bodies together. Medusa let loose a moan into Stein's mouth and closed her eyes, losing herself in the moment. Stein figured that it was time to change positions.

"Here we go," he said, pulling away from Medusa to turn her around. He slammed their hips together again, forcing a cry of pleasure out of her mouth. He reached for her arms and his hands found her slender wrists. He pulled her body towards his as he smashed his hips against hers. He couldn't help but hear that she was moaning his name at an increasing volume. After a few more thrusts, he let go of her arms and pushed her face into the sheets, slamming their hips together hard. Medusa growled at him angrily.

"Make up your damned mind about what position your want! Or I'll really eat you, little rat!" she screamed as he pulled back and then pushed himself into her wet and wanting body again. After that, no coherent words left her lips for a while as their hips collided with enough force to rock the bed back and forth regularly. He wrapped her long hair around his fist as he felt himself coming close to another orgasm. Stein pulled her up by her hair and licked the shell of Medusa's ear. She shuddered with absolute pleasure. He nibbled on her earlobe, very lightly though. He knew just how sensitive ears were after years of operating on both willing and unwilling subjects.

"Medusa, you're not about to…are you?"

"I…can't…hold…it…" she moaned between the thrusting of her partner's hips, grabbing Stein's body with dozens of vector arrows. She pulled them upright with the vector arrows and then lost her mind in an orgasmic scream. She threw her head back and grabbed Stein's hair, almost as if she were going to rip it out of his head. She screamed his name at the top of her lungs and then Stein felt himself reaching his peak.

With a final thrust, Stein climaxed, hard. He held Medusa's sweating and shivering body to his own panting one as tightly as possible, hands clutching her large breasts, squeezing her soft flesh. Stein emptied his seed into her body and she chuckled softly through heavy, labored pants. Stein didn't understand why until he felt her vector arrows, every one of them, spinning the screw in his head counterclockwise.

Stein's eyes crossed and his arousal returned ten fold. He could barely keep himself upright as colors flashed before his eyes. His ears rang. He could only feel Medusa's warm body against his own, so tantalizingly bare and pleading for him to go on. Stein's mind wandered everywhere at once, and slowly came to rest with Medusa's body against him.

He didn't even care about the vector arrow that had crawled down his throat a few moments ago. He blinked away the colors and calmed himself down after the dark arrows finished winding his arousal back up. Stein slipped a hand up to Medusa's slender neck, fingers tracing her jawline very gently. He arched a brow.

"Can't get a better screw than you, can I, Medusa?" Stein asked as his hips pushed against hers again, sliding his erection further into her heat.

"Not as long as this snake is wrapped around you, my little lab rat, no matter how much you bare your fangs" Medusa purred into his ear. Stein turned her head to the side and dominated her mouth with his. He didn't ever want this to end. And at the moment, unlike his earlier assumptions, he didn't know if he could stop, even if he wanted to.

A/N: Well guys, tell me what you thought about it. Good, bad, ugly? I wanna know.

Always Thankful – Azure Zangetsu