Young Gun
Emery Walsh x Cassie Mckay x Reader MDNI NSFW
Summary: Cassie is a bit territorial about her med student. Emery loves to work Cassie up. Med student reader gets the benefit of both. Age Gaps, f/f/f, implied past fwb Walsh/Mckay, fingering, oral, pathetic needy Cassie at one point
Author's Note: A McWalsh sandwich with medical inaccuricies and sloppy writting is better than no McWalsh Sandwich right? Thoughts and prayers to the man dying whilst these two hate eye fuck, jesse does not get paid enough to put up with this bs during traumas but i'd do it for free
Inspo from @alesbrarian 's post and thirsty chats with @simpfolder
You know who she is the moment you see her, based on nothing more than the energy she carries. The type befitting of a fiersome but respected reputation. Hands tucked in the back pocket of her scrubs, Dr Emery Walsh doesn't walk through the ED, she swaggers. If it was a movie slow motion and blarring music would set in as jaws dropped.
"You're gonna catch flies." Cassie's voice snaps you back to the charting your meant to be doing and alerts you to the fact your jaw had indeed dropped watching the attending surgeons arrival. You say nothing, embarassed your mentor has caught you out. Mckay picks her stethoscope up from the desk, "Don't worry, we've all been there." She flashes her eyes in the direction Dr Walsh had headed before she bounces off towards cubicles.
~~
Your first close encouter with Emery comes weeks later in the trauma bay. The team had just got the patient with a penetrating chest injury, back from an arrest but things weren't looking good. As always Cassie was working frantically alongside you.
"Okay, chest injury, previous signs of life, arrest but vitals aren't good. What you thinking?" She quizzes you on the spot. Your mind rushes through tests, information, possibilities.
"Given location of injury could have damaged aorta? Would need thoracotomy to confirm and repair?"
"Good shout!" Cassie's golden eyes shine up at you from where she's busy working on the patient. Praise from Cassie always feels like being warmed by the sun. You couldn't have asked for a more attentive mentor. The sunshine fades with swinging sound of the door heralding the arrival of the surgeon.
"One for you Garcia, probably aortic injury, lucky my young gun here is on the ball." Cassie, with her back to the door had wrongly assumed which surgeon she was dealing. You, however have the eyes of Emery Walsh boring into you. It was enough to have you feeling feverish, even before Cassie had called you "her's." You know it holds no real meaning, if anything its become a habbit of Cassie's - my young gun, my star pupil, my mentee- but the rush of blood it sends through you has never slowed. Noticing the startled look on your face and Jesse's barely contained snigger, Cassie's head whips back confrotned by her mistake when Emery instructs everyone to prepare for a thoracotomy. There's a flurry of masks and gowns being donned through which Cassie appologises.
"Walsh, sorry didn't know you were on days."
The surgeon rolls her eyes, pushing passed Cassie to begin prepping the patient as casual as if she was making coffee. "Garcia's swanned off on some holiday, some shit about finding herself." Emery grumbles, wiping the patient with disinfectent.
"Come on then young gun, you're shout, you see it through." You gulp as Emery motions her head for you to come stand by her. Instinctively you look to Cassie for permission. Her eyes are narrowed in Walsh's direction and theres a red tinge to her face, something bordering on angry. Without looking away she tells you "Do it." As if Cassie's voice is a starting gun you spring back into action, grabbing the scalpel Emery is holding out and take her place. You hope she can't detect the shake in your hands but thats foolish, nobody makes surgical attending without attention to detail. You expect she is going to grab the instrument back but instead her arm reaches over yours. Memories of flirty girls and pool tables inappropraitely come to mind. She steadies her fingers over your's, she's close enough you can hear her muffled breath under her sterile mask. You've began swealtering under your own. Emery talks you through the incision, her voice falling close to your ear as she directs your hands and instructs your next steps. It does little for your shakes. Time seems to warp, the procedure may be taking minutes or hours, you can't tell, only aware of the instruments in your hand and Emery's voice.
"Okay, see that there?" She points to where your diagnosis is confirmed. "Gonna need three sutures." You hold your breath to steady your nerves. Emery moves close again, directing you through suturing the damaged vessle. "Retreat and I'll close up" she tells you as you finish. You hold your bloody gloved hands up out the way and step back so she can check your work.
"My, my didn't you win the med student lottery, Mckay?"
"I know." Cassie is quick to reply, her steely stare fixing back on Emery who, matches it with a scowl of her own. For a brief but tense second they freeze, squared before one another with your poor unconcious patient between them. The only sound is the beep of the mointer and thud of your pulse as the air is sucked out the room. You catch Jesse's eyes flitting between the two woman like he's watching a tennis match before offering an update on the patients vitals, thankfully breaking the silence. Normal order ressumes as Walsh dramatically tears off her mask and gown, barking out follow up instructions. You hurry yourself to follow them but Cassie does so with a passive aggressive air.
"Good job, young gun!" Emery calls, her back pressing the door open. You're glad to still be wearing your mask, concealing the frankly pathetic smile you ereupt into and the tiny sound you make when Emery winks in Cassie's direction.
~~
Shift ends and you feel like you're dragging yourself out the door. The day had been a rollercoaster of cases. The high of your surgery with Dr Walsh was followed by a crash of saddness with a young patient. The whole day Cassie's seemed edgy and tense. You'd grown to know her well enough she'd vent to you if it was about Chad or his new woman. She hadn't said anything though. She was attentive as always but there was something different about her actions. More lingering close to you to discuss a case, her hand a little firmer when she moved you out her way in the trauma bay. Maybe you were imagining it. The word "my" seemed to rolll into every nickname she called you all shift, the word more firm and exaggerated than before. "Thanks, you're my hero" when you passed her a coffee. "Thats my student!" she'd protested when Robbie called you to help him. "Let me give you a ride home, you've been my little superstar today." She offeres, slinging her arm round your shoulders casually to direct your tired body towards her car. "Thanks, Cass." You quickly half hug her back and follow her lead, trying not to think about how invitingly warm and soft Cassie's body had been in that small interaction. There's a figure waiting by the slick gleeming sports car parked next to Cassie.
"See you're still driving the old man truck, Mckay?" Emery's voice rings through the evening air. Cassie breaks out into snirkers.
"And you're obviously hitting mid life crisis." Cassie nods towards the car Emery is leaning against but you see the way Cassie's eyes are roaming over the vechiles sleek curves. Not disimmilair to Emery's own silohuette.
"Whats your ride, kid?" Emery asks. With both her and Cassie intenently looking at you, you faltter. The nervous shake you had in the trauma room returns.
"Um, Cassie." The serious, straight faces of both woman break and they shriek with laughter. "No..no i mean Cassie's taking me home." You burn with embarassment and Emery finds yet more implication.
"Ooo does HR know?" Emery digs an elbow into Cassie's ribs, making Cass double over again cackling until she eyes you watching her and the heavy silence from this morning reappears. Except now its you who finds yourself under Cassie's stare as Emery watches you both, smiling knowingly at the clear attraction and tension between the two of you. "I won't tell if you don't." Emery breathes out, like another simple matter of fact that turns Cassie's face to a hungry grin. "How am I meant be to be sure of that, Walsh?" Cassie speaks to Emery but keeps looking at you, apraising you like she had Emery's car. This must be some exhaustion induced dream. "I wouldn't be inclined to tell on myself, would I?" Now its Cassie's jaw that drops in response to Emery, scandal and excitement rolling into one. "Still looking for that ride home?" Cassie tips her head to one side, casually sliding closer to you. You feel yourself caught in the two women's expectant look. The air has gone again. "Um yes please?" They smile at one another. "Good manners." Emery observes and turns opening her car door. "See you at mine?" She asks looking at Cassie who looks at you. You nod perhaps too willingly, your heart quickening every second this goes on and your body alighting with desire. Cassie smiles delightedly, "We will indeed."
~~
Cassie kisses in the same way she does anything. Intense, purposeful with that caring guiding edge thats had you crushing on her since day one. She has your face craddled in her hands and tongue roaming your mouth as you press your body against hers, desperate to feel its soft warmth again. Cassie strips you slowly, the removal of each piece of clothing followed by more kisses and breathy praise for how pretty you are. Emery watches the same way you assume she does most things, fiercely. She sits, legs slightly spread, at the edge of her ridiuculously large bed. She notices how you push yourself closer to Cassie and how willing you accept every time she deepens the kiss. When the pair of you finally seperate Emery becons you to her waiting lap. She can't help scoff when you look to Cassie for permission like you had on shift. Cassie playfully pushes you towards Emery who settles you on her knee, fingers running through your hair far more tenderly then you thought her capable of. She pecks your lips briefly, and smiles, they taste like the same brand of chapstick she recalls Cassie has always worn.
"You've waited a long time for that haven't you?" Your eyes cast downward, suddenly ashamed your crush might have been as obvious to everyone. Emery catches your chin between her thumb and finger directing you to look at Cassie and give her access your neck. Shivers crawl up you, Emery's lips ghosting over your pulse and lightly kissing up and down your neck. So faint you once again think this must be a dream. Biting her lip with a hesitant smile, Cassie undresses before you as Emery's kisses grow firmer, wetter against your skin. "You think she's pretty?" Emery whispers into your ear, without her surgical mask to muffle her voice you realise the raspy edge it has. You nod. Cassie really is pretty, all the colours of autumn with a stellar smile, ripped arms and sweetly soft tummy. Emery hums in agreement with herself, pausing her mouth's movements and settling her head on your shoulder so you are both looking at Cassie like she's the setting sun. Cassie huffs shyly, suddenly unsure what to do except be trapped in the force of your twin gazes.
"Come on, Mckay don't give me that shy shit, fucking hot as ever." The lightbulb of realisation pings in your head. They've been together before! It makes your mouth dry and body wriggle on Emery's knee. Cassie comes to sit next to the two of you. When Emery captures your lips in hers, Cassie take up the job of licking and lightly nipping your neck, mindful she doesn't want you to be the talk of the department tomorrow. Emery pulls back from you with a smirk and tilts Cassie's head up to look at her. "I mean just look at who you've got into bed." They share a laugh and look at you like a prize. Emery's mouth returns back to yours and Cassie hands sneak round to run over your sensitive nipples, down to your thighs and back, spending a little longer playing with your chest each time. This time when Emery releases your tongue from where she'd been sucking it, she leans as close to you as she can, reaching over to tug Cassie by the hair into a kiss. You feel Cassie's bare chest press to your back and she gasps at the feel of your skin against her hard nipples. Emery and Cassie's mouths meet just by your ear, letting you hear the wet push and pull of their tongues fighting for dominance until they break apart. Emery directs you up off of her. There's a damp spot on her leggings where you'd been sat that Cassie spies instantly and chuckles.
"Oh my poor girl, come here." and pulls you on top of her. Her hands return to roaming your body, kissing you more hungrily than before until your hips roll and work your needy wetness against the curve of her stomach. "My needy girl." She coos. "Yours?" Emery, having discarded her clothes to reveal her strong frame and delicately pale skin, climbs onto the bed. Where Cassie's body is made of the last autumn sun, Emery's is carved of cool precious pearl. You reach to touch but she grabs your wrist, her strong grip makes you press yourself harder against Cassie. "Better ask Mckay first, your her's after all" Emery's eyebrow raises, the word 'her's' spat out with bitter bemusement. Cassie plants her large palm on your hip, stilling you. Her hot tongue returns to that spot under your ear that makes you whimper for her. "I don't know." She muses. Emery growls with fire in her eyes. "Don't fucking push it." Cassie giggles mischevously, now using her hand to guide your hips to rock against her. "She's so wet Emery, not fair to have her touching you when she's the one who needs to be touched." Cassie looks at you with pity, her fingers dancing over your hip. "Dont act the hero, Mckay" Emery's grip on your wrist has only tightened. "Lie down." Cassie tells you, forcing Emery to shift over and let you go. Her eyes are near black with seething jealousy. By contrast Cassie turns on the sweet charming smile, the one youve seen her use to get difficult patients to comply, and kisses Emery's cheek. "Don't look so worried Walsh. Im sure my girl can handle two things at once. Right, darling?" She uses the same voice as when she's instructing you at work but peppered with my girl and darling it makes you even weaker and more eager to agree. Before either you or Emery can reply Cassie is leaning over you, her face is soft with the comfort thats seen you through the worst of shifts. "You okay with this?" A frustrated moan is your first response. How could you not be okay with this??? But you appreciate Cassie's consideration and cautiousness. "Yeah. I want it Cass, want both you." You shut your eyes in shame, feeling like the greedy kid who wants it all. You need not have worried. Cassie crawls down the length of your body and eases your legs open, her strong grip on your thigh makes you feel exposed, your arousel disiplayed before her. Cassie licks her lips, settling to be eye level with your core but not touching. Yet. "Go on baby, don't leave Walsh out." You reach for Emery, who is gazing down at where you lay. Swiftly, her mouth is on yours, this time her kiss is more biting, like she has something to prove. It makes you moan into her mouth, even more so when you faintly feel Cassie's tongue in the crevice of your thigh. Your hands roam the curve of Emery's back, the dips and peaks of her side whilst she barely lets you breath before attacking your mouth with hers again. Cassie's teasing tongue offers a single swipe through your folds which makes your thigh quiver under her hands.
"She teasing you?" Emery tuts and shakes her head in disapproval. She guides your hands to cup and play with her boobs. Theyre firmer than Cassie's but have the same weight and fullness and Emery makes a similair gasp at the sensation of you grazing her nipples. As if proving Emery wrong, you feel the flat expanse of Cassie's tongue beginning trailing up down round your slick folsa on a voyage of discovering where makes you twitch and whine with pleasure.
Emery directs your mouth to her nipple. You suck at it with the same graze of teeth she'd used on your lips. She reaps the rewards of Cassie speeding up her tongue against your clit when your moans viberate around Emery's hard bud. "She's good at that isn't she?" Emery quirks her eyebrow in Cassie's direction, you wonder if the envy in her is because she wants to be in your or Cassie's position. Cassie pauses just long enough to prompt your answer "Walsh asked you a question, baby." She keeps her mouth close so her words blow over your wetness "Good, really good." You shiver as Cassie suctions your clit into her mouth, rolling the bundle of nerves until youre pushing against her restraint on your thighs. Youre desperate to grind yourself into her face. With head lolling in delight Emery returns to kissing your neck, muttering praises in your ear each time you gasp and whine from Cassie's efforts. The way your mentor is slurpping down your wetness should be vile but her enthusitic pursuit of your pleasure leaves you incapable of feeling anything but joy. Cassie looks up with ruffled hair and her chin sparlking wet. "Gonna need a hand here, Walsh." She uses her steady, urgent doctor voice. As if responding to an emergency Emery, with a roll of her eyes, quickly shifts down the bed. She positions one of your legs over her, spreading you further open for Cassie to kiss sloppily.
From here, Emery is able to slip her nibble fingers down to your hole, using Cassie's pause for air as a chance to slip one inside. Her fingers are longer, more practicised than your own, which have spent plenty of nights getting yourself off to thoughts of Cassie and as of late, Emery. Emery who is able to quickly find your most sensitive spot to press against. The moans garggled in your throat spill into groaning cries when Cassie returns her mouth to your clit. The two of them silently working in tandem with the squirm of your body. There's a wave rising in you, surging forward with each action by Cassie and Emery. They dance a back and forth that leaves you with no reprive, one of them on or in you at all times. When Emery's finger slides in time with Cassie's tongue the wave grows in your stomach. Emery giggles and scoffs "Better ask Mckay if you can cum. Wouldnt want to upset her would ya?"
"Please. Can I cum Cassie? Please let me" You plead with your eyes shut and everything in you coursing towards a toe curling orgasm. Cassie gives a hum of agreement that vibrates through you. Your body clings round Emery's digit, everything turns taught and the wave crashes ashore. Pleaure floods you and you hear the sounds of your ecstasy fill Emery's bedroom. With a final sickeningly loud slurp Cassie removes her mouth from you, her own eyes rolling with happiness. She clumsily pulls Emery's finger from you and takes it in her mouth sucking it clean of your release. You watch the scene unfold through blurry eyes. Cassie's body is flush with the bed cover, her hips writhing against the expensive fabric. Emery swipes her thumb through your sodden folds and replaces the finger in Cassie's mouth with it. Cassie slides her mouth up and down Emery's thumb, humping the bedcovers like a wanton teenager.
"Oh Mckay you always were so pathetically needy." Emery tangles her hand in Cassie's greasy hair. Cassie aggressively pulls off Emery's thumb with a popping sound. "Fuck you, Walsh." She huffs aggressively but her hips keep moving. Emery presses her spit soaked thumb onto your delicate still pulsing clit. "Watch me make your girl cum, Mckay." She increases the pressure on your nerves and rubs circles in time with Cassie's tragically eager hips working up friction against her own throbbing cunt. You almost resent when the feeling forces your eyes closed so you can no longer relish the sight of needy Cassie Mckay. Through the darkness and swelling pleasure Emery is giving you, you swear you can feel Cassie's stare burning on you as she muffles the sound of her orgasm in the bedclothes. You force your eyes open to see her head pressed to the mattress and body twitching with after shocks, Emery drinking the sight in with one thumb on your clit, her other hand pleasuring herself. The surrealness, the wet sounds, throaty moans is all too much and you feel yourself leak onto Emery's bedspread as another orgasm shakes you. Next to you, Emery's body contracts violently and she sighs loudly signalling her own release.
~~
The air is thick with the smell of sex and sweat. Laboured breathing is the only sound until the mattress squeaks as Cassie crawls up to the head of the bed so you are now sandwiched between her and Emery's sticky bodies. She by passes looking at you to find Emery's eyes and they settle back into another round of hard stares that you're too tired to focus on. Cassie kisses your head before looking again to Emery.
"Youre right, Walsh. I really won the med student lottery." Your heart flutters proudly. Emery rolls so she can throw a leg over you, spooning your back. With her free arm she pulls Cassie flush with your front and holds you both.
"Come on, Mckay I think its a case of we won." You can't help giggling. Even cuddled up in post sex haze theyre still competing. You clear your throat, catching their attention, and snuggling your body down closer to them both. Sleepily and smuggily you inform,
"I think you'll find i'm the real winner here."











