The idea of Sam and dean having a younger adult sister while they're working as case with dying virgins and Dean goes "well you're staying here. No virgins in the line of fire"
And she just snorts, amused by the fact that she in fact hasn't been a virgin in years and sam and dean look at her like she's lost her head
Dean goes "what was that?"
"What?" She asks playing coy
"That snort"
"I didn't snort"
"Sam?"
"You definitely snorted"
And they're just completely horrified to find out their baby sister did the devils tango.
oh to be their sibling
GIRL, YOU'LL BE A WOMAN SOON
wordcount: 1416 summary: The Winchester brothers can handle ghosts, demons and literal apocalypses. What they can't handle? Finding out their (not so) little sister has a sex life. warnings: crack fic, winchester sister!reader, dean being an overprotective older brother, sammy being lost n confused, reader is not a virgin– think that’s all !!!
“Absolutely not” You looked up from the gun you were loading, a confused frown pulling at your face while Dean pointed at you with complete seriousness. “You're staying here” He doubles down, arms crossed over his broad chest. “Order yourself some food, rent a movie… Whatever you want, but you’re stayin’ back”
You blinked. “...Excuse me?”
“The victims are all virgins–” Your eldest brother said as if that explained anything. “No virgins in the line of fire, sweetheart” You stared at him for a second, lowering your gaze back at the gun in your hands before an involuntary snort escaped you. Dean narrowed his eyes immediately. “What the Hell was that?”
“What was what?” You asked innocently, busying yourself with loading the weapon to avoid his scrutinizing gaze.
“Nah, nah, you don’t get to play it off” He quickly replies, starting to buffer. “That snorting sound you did just now”
“I didn't snort” Liar.
Dean turned toward Sam for help. “Sam?”
His brother barely looked up from the lore book in his hands, reluctant to get on either side just in case he got caught in between. Though he shrugs, glancing between y’all with a: “You definitely snorted”
You fought the urge to smile, thoroughly amused. Your older brother clearly did not find it amusing, tightening his crossed arms and shifting his stance. “What's so funny?”
“Nothing”
“No, no, no” He pointed between all of you. “Something is funny”
You shrugged. “S’not important”
Dean's eyes narrowed even more. “Spit it out”
“De, seriously” You can’t help but chuckle just a tiny bit. “You’re really that dense?”
Dean blinked. “Hey” He protests, though he’s not really sure what exactly he’s supposed to be offended about.
You huffed out another laugh, shaking your head in amused disbelief. “Oh, this is priceless”
“What's priceless?” The eldest demanded.
You glanced over at Sam, hoping at least one of your brothers would finally connect the dots– for two incredibly smart hunters, they sure could act stupid when trying to interact with other human beings. Unfortunately, said brother was still buried in his book. “Sam?”
“Hm?” He looked up, hazel eyes wide behind the messy mop of hair that fell over his face.
You gestured toward Dean. “Tell him”
Sam frowned, head cocking in confusion. “Tell him what?”
You stared at him, he stared back. Then his expression slowly changed, realization slowly dawning over him– his eyebrows furrowed, his eyes widened and then he sat up straighter, dropping the book onto his lap. “…Oh”
Dean pointed at him immediately, confused and wanting to get in on the silent conversation.
“See? Sammy gets it” You shrug simply.
Sam looked at you, then at Dean, then back at you– still stuck on trying to stomach this newly acquired information. “…Oh” He repeats.
The eldest brother groans once more, starting to get frustrated. “Would you stop saying ‘oh’ and tell me what the Hell is going on?”
You leaned back against a table on the heels of your hands, unable to hide your amusement anymore. “Dean”
“What?”
“The victims… are virgins”
“Yeah” He nods.
“And…?” You’re trying your very best to lead him onto the conclusion without having to outright say the words out loud. As funny as the whole situation was, there was a hint of awkwardness to saying: hey big brothers, I have sex on the regular!
“And what?” God he was stupid.
You stared at him, Dean stared right back. Then slowly, so slowly… his eyes widened slightly and his face immediately dropped. “No”
You bit your lip to try not to laugh in his face. “Oh my God”
“No”
“Dean”
“No”
“Dean”
He pointed at you accusingly. “You're a virgin”
You snorted. “Dean–”
“Nope. Nope”
“De… c’mon”
“No” You finally laughed, fond and teasing all at once. “I haven't been a virgin in like years”
There was silence– complete, awkward silence. Dean froze, Sam froze, both of your brothers froze. (Which was funny given they’d fought literal demons without flinching but were dropped to their asses by the concept of their little sister having a sexual life) Dean slowly turned toward Sam and Sam slowly turned toward Dean, sharing a dumbfounded look before both of them snapping their heads toward you at the exact same time like 6 foot plus puppies. “…Years?” They said together.
You downright grinned, still leaning back against the table. “Years”
Dean looked horrified, Sam looked horrified– they were being weirdly coordinated except for the fact that Dean looked offended while Sam looked like his brain had entirely shut down. “Years?” The eldest repeated. “Years?” The younger one echoed, somehow sounding even more scandalized by this discovery.
You burst out laughing. “God, Sammy I expected it from Dean but you too?”
Sam blinked rapidly. “No, I mean– Yeah? Because years?”
“Sam” You deadpanned.
“You're like twenty-two”
“…Yeah?”
“And you said years” He pauses, to shrug dramatically. “As in plural”
“Correct”
He stared at you. “You were like…” Sam paused, doing mental math against his will, making his face twist. “Oh, God no” He groans, rubbing both big hands over his face.
You pointed at him. “See? This is exactly why I never tell either of you anything”
Dean looked personally betrayed, scoffing loudly. “There’s things you don’t tell us?”
“My sexual life is not your business, De” You can’t help but let out a little scoff of amusement despite trying your very best to hold it down.
“Oh it’s definitely my business”
“No, it isn't”
“You're my little sister” He doubles down stubbornly. “M’ your big brother”
“I'm an adult”
“You're my little sister who is apparently–” He gestured vaguely with both hands, visibly dumbfounded and a tiny bit disgusted by the idea. “ –doing… things”
You nearly doubled over laughing, a fond, genuine chuckle escaping from deep in your stomach. “Doing things?”
Sam groaned into his covered face, still hiding away from the world. “Oh God”
Dean whipped his head to look over at him, hoping for him to be just as mortified as he is right now. “What?”
The middle brother shook his head stubbornly. “Nope, don't wanna think about it”
“You're thinking about it right now” You teased, a shit-eating grin spreading on your face. It wasn’t often that you managed to leave your older brothers speechless.
“Really trying not to” He groans, dragging his hands over his face with a bit more drama than necessary.
Dean looked between both of you in disbelief. “Wait, hold on” His eyes widened all over again, the slightly (slow) rational part of his brain finally putting more pieces together. “Years means this wasn't just one guy” A brief pause, pouting his lips in thought. “Or chicks, not judging” He adds quickly under his breath.
“DEAN” Both you and Sam replied at the same time– though you were practically laughing while Sam looked three seconds away from combusting.
“What?!” A scoffs defensively, opening his arms in defeat. “You said years!”
“Dude, stop talking” Your other brother pleads.
“I can’t– mean… Now I have questions!” He protests.
You shoot him a look that’s both amused and annoyed all at one– to be fair, that’s kind of what older brothers do. “You don’t”
He doubles down, crossing his arms over his chest. “Who was he?” A pause with a pout-ish frown. “Or she?” He adds with a shrug.
“Nope”
“When the Hell did it happen?”
“Nope”
“Where were we?”
“Absolutely not”
“Was he a hunter?”
“Dean!” You protest between chuckles.
Sam suddenly looked alarmed, looking up at his brother. “Wait” Oh God no– a brotherly alliance. You knew that look, he was spiraling along with Dean now too. “Wait, was he a hunter?”
“Sam, don't start”
“Because if he was a hunter, that changes things” Dean nods along with all seriousness he could muster, adding a proud: “See? Exactly what I was sayin’ ”
“No, it really doesn't!”
“It absolutely changes things”
“How would that even change anything?” You ask, small chuckles managing to squeeze through in between each word.
“Because hunters are assholes” Dean said matter-of-factly, still nodding.
“We’re literally hunters!” You protest in amused disbelief.
“So we’ve seen it firsthand” Sam agreed with his brother, also nodding along.
You stared at both of them. “Y’all can’t be serious about this”
Dean shook his head dramatically. “Worst discovery of my life” You try to chime in with a teasing: “Didn't you go to Hell?” But he cuts you off, pointing at you with a ridiculously serious expression. “This is still worse”













