So, rather surprisingly, this was the prompt I tackled for
blindfold_spn. Yes, I know, I'm not exactly sure what possessed me either.
I didn't think anyone else would have a go, but
latentfunction gave a much better response just seconds later, which was
Exit Sign in the Mirror, which you all should definitely go look at.
But I've tidied my own attempt up and here it is.
Filthy in love
(girl!Sam/Dean, nc-17, 972 words)
Prompt: Dean/girl!Sam, oral sex during girl!Sam's period.
"I need a shower," Sam protested, but she let Dean tip her backwards onto the bed all the same. After all, Dean had ghoul guts in his hair and Sam still felt the urge to kiss his pretty mouth ugly and bruised.
"I like you like this," said Dean. He dropped to his knees in front of where she was sitting on the end of the bed and began slowly tugging on the sash that held Sam's cheap bathrobe closed.
He bared her breasts first, easing the bathrobe down off Sam's shoulders, his hands smoothing her skin as the fabric fell.
"Like you just... like... this," he said, and he leaned in, buried his face in the heavy curves of her breasts, tonguing at one achingly sensitive, flushed pink bud of her nipple, the rasp of his stubble against her skin making her back arch and drawing a small groan from her. Instantly, he ducked back, searching her face for some sign that he'd hurt her.
Somehow, Dean still managed to think that he was the one who wanted this most; he seemed to have missed all the years that Sam had trailed along behind him, begging and wanting and fucking herself frantically on her fingers under motel bedsheets, just thinking of him pushing inside her, hard and thick and buried deep.
"Dean," she said, and shifted fretfully on the bed. "Dean, c'mon, don't leave me hanging."
Finally, Dean began carefully working the bathrobe open over her legs and Sam steadied herself with a hand on his broad shoulders. He glanced up at her, dark-eyed and intense, while he slid her knees wide, opening her tender cunt to him in a way that made Sam tremble even after the thousands of times she'd spread her legs for him before.
Blood smeared the insides of her thighs and had dried her pubic hair into crisp curls. She could smell the blood in the air, thick and dirty, and her legs quivered as she fought the urge to close them.
"No, don't," Dean murmured. His gaze was fixed on the dark redness between her legs, wet with blood and her own slippery juices. Reaching out a hand, he thumbed her wider open for his scrutiny and Sam let him, even as her cunt instinctively clenched at the touch.
"Does it hurt, Sammy?" Dean said, like they were kids again and Sam'd fallen and scraped her knee. "Lemme take care of you. I wanna make it feel better."
Sam's belly tightened, her hips squirming, as Dean leaned in and licked the stained skin of her inner thigh, his tongue drawing a thin line through the sticky blood. His face dipped between her legs, right in, and she only had a moment to register the heat of his breath before his mouth was slippery and sucking at her, where she was open and aching.
Again, the instinct came to put her legs together, but all she succeeded in doing was trapping him tight between her thighs. Dean crawled closer, gripping her legs open for himself first as he licked at her throbbing clit with deliberate slowness, until she was pulsing heat at him. Then, as she was shuddering and whining, he eased her long legs up over his shoulders, decadently tipping her cunt up to his mouth as easily as he would a glass.
"Fuck, fuck, Dean, it's dirty, you can't..." She was gibbering helplessly. Her cunt sounded so wet, sloppy, where Dean was mouthing at her, and his tongue was alternating between flicking her clit and fucking into her.
"I wanna," Dean said, drawing back enough to kiss her thigh, right at the crease of her ass. "I wanna leave you dripping. Make it all feel good for you. God, Sammy, I like you so much like this."
And Sam spread open on his tongue, slick and bloody, his lips mouthing at her clit until she could feel the wetness on his chin and dripping down her ass, onto the bathrobe beneath her body. The sensation made her flutter inside, right along the length of her spine, driving her crazy because Dean's tongue was fucking into her, deep and greedy, but she wanted his dick, wanted it hard and shoved right into that tenderness, until it was shocking her whole body, rattling her womb.
She wanted Dean, solid and strong, under her and on top of her and right up inside her.
With a frustrated grunt, Sam fisted her hand into Dean's hair, crossed her ankles over his back, and screwed her cunt into his face, dragging his mouth where she wanted it as she rode his tongue, driving back into him until he gave up even trying to direct and just let her use him, his hands holding her hips steady.
Even as everything else in the room was whiting out, she could hear the raw, hungry noises he was making as he gave her what she wanted. She was almost there, almost there, and her breath shuddered out of her in desperate panting.
When she finally came, she squeezed her thighs tight about Dean's cheeks, holding his face pressed into her cunt, slick and hot with blood and her own juices.
Breathless, she flopped backwards on the bed, smiling when Dean followed her down, crawling up her body to kiss her with his mouth, his pretty mouth that Sam had made filthy. She put a hand on his face, fingers curving along his jaw, and licked at a streak of blood on his cheekbone. Dean didn't take his eyes off her the whole time and Sam basked in how much he loved her.
She spread her legs wide to accommodate his body between them and smiled again when the hardness of his cock rubbed her thigh.
"I like us like this," she said.
~end