“Uh, babe, I’ll call you back,” Faye said into the phone at her shoulder, staring wide-eyed at the sight of her roommate splayed out on the couch with her cock in her hand.

The groceries were already on the floor. She’d never thought that was something that actually happened in real life—dropping the groceries in shock, that is. It was something that happened in TV and movies, and certainly not something she’d ever imagined happening to herself. Then again, she’d never imagined walking in on Casey masturbating, either.

For some reason, even as she took the phone from her neck and ended the call, she found herself unable to avert her eyes. It was the same principle as how a car crash commanded your attention. Casey had no such excuse, though; she’d been watching Faye like a hawk since the moment the door opened wearing a grin that Faye found to be wholly inappropriate for the situation. If she did insist on grinning, she could at least make it a sheepish one.

And her cock was still in her hand.

“Hey, roomie,” Casey said, “didn’t expect you back so soon!”

“What?” Her younger roommate may not have been the sharpest, but surely she wasn’t that unobservant. “I always go to the store around this time, Casey.”

“Huh… I guess you do. My bad?” Clearing her throat, Casey cast an awkward glance around the room for a moment, adjusting her snapback with the one hand that wasn’t wrapped around the length of her cock.

Faye had always known that her roommate was more liberal with how much skin she showed, sometimes to the point of what seemed like a complete lack of self-awareness, but this was beyond the pale even by her standards. Casey’s bean-pole body was clad in nothing but a sports bra that left the long expanse of her stomach completely bare, and the same gemstone pendant Faye had never sighted her without since the day she moved in.

And that was it. She was naked, basically. Naked in the living room. On the couch. With her cock in her hand. Wasn’t she even a little bit embarrassed? Why wasn’t she trying to cover herself up? Move to her room? Anything?

Oh, god, did she have a humiliation kink? Faye didn’t consent to being part of that, and she was moments away from vocalising as much when Casey piped up first.

“Well, y’know how it is,” Casey said with an easy shrug, her grin thinning into something far more wolfish, “when you walk in on someone masturbating, you have to use your mouth to help them finish. That’s just how it is.”

Faye blanched. “Excuse me,” she laughed incredulously, “that’s ridiculous, and even if I didn’t have a girlfriend, it’d be—”

“Rules are rules, Faye,” Casey interjected with a snicker. “I don’t make ‘em.”

Faye felt the objection form on her tongue, but it was stopped by two simultaneous events: the very brief feeling of vertigo that passed almost as quickly as it came, and the realisation that Casey had a point. Thankfully, it hadn’t been particularly relevant to her up til that point, but she did have some vague recollection of there being a rule like that.

Weird and potentially problematic as it seemed, it was like Casey said—rules are rules, and it was fruitless to wring her hands too much over it. The day was always going to arrive. At least it was with Casey and not a stranger, small comfort though it was.

The groceries scattered across the floor caught her eye, and a fret wormed its way into her thoughts—her girlfriend was visiting tonight. It was her first time over at Faye’s place instead of the other way around. Would she understand? Casey was the reason she’d never brought Gina over until now, so how would she react when she found out that Faye had, just that same day, sucked the dick of the woman she was always complaining about?

No, she shouldn’t think of it that way. Gina would understand. It was just something Faye had to do, like filing taxes or writing the whole day off because of the line at the DMV. It was a task. A chore. A checkbox to tick off. It wouldn’t be anything like when she went down on her girlfriend and earnestly ate her out with all the gusto in the world; no, this would be rote and efficient.

Faye allowed herself a short huff, just to make sure Casey knew it was an inconvenience. “Well, it is how it is, I suppose.”

“Exactly.” 

But the groceries were still scattered, and half of it was fresh produce. “I’ll… be there in a minute, I guess. I just need to pick up the groceries and put them away—”

Casey was quick to object. “Ah, nope, no way. Get that cute butt over here.”

“Casey, I—”

“Faye,” Casey started, her voice suddenly iron, “I am so fucking hard right now, and the only reason I haven’t cum yet is because you interrupted me. I need those lips around my cock. Right now.”

“Lucky for you I came in when I did, then,” she muttered, but if Casey heard her snark, she didn’t comment on it. “Fine. Let’s get this over with.”

So she walked over to the couch, an anxious knot forming in her chest as she drew closer to it. It drew her gaze like a lightningrod, demanding all attention in the room. She’d seen it at the door, obviously, but up close? Well, it was big, and it was long, and actually, it was pretty thick, too. At least she thought it must’ve been, though she’d never actually seen a cock in person before.

Wetting her lips, Faye hovered nervously for a moment, wondering how to tackle the problem. When she settled on sinking to her knees, she caught Casey drinking the sight in like fine wine, finally releasing her cock only so she could fold her arms behind her head. Of course she was acting like royalty, leaping on the chance to lord something over Faye. It must’ve been novel for her. But much like the subjects of royals past, Faye was only performing her service out of necessity.

“Good girl, didn’t even need to tell you to kneel,” Casey said, shuffling a little so Faye could wiggle into the space between her legs.

Ugh. She was really going to milk this, wasn’t she? Faye had a sneaking suspicion she’d never hear the end of it.

Up close, she found Casey’s cock flushed as it twitched in the air. There was a bead of precum trailing down the meaty underside—didn’t people call it something like a cockvein?—on a collision course with Casey’s smooth, pretty nutsack. ‘Pretty’ was probably an odd way to think of something like that, but there really was something oddly appealing about the sight of the taut, weighty sack hanging freely between her thighs.

“Gonna just stare at it? You know what to do.”

Faye blinked. She did not know what to do. Sure, rules are rules, and all, but that didn’t magically impart her with expert dick sucking technique. She did know how to eat pussy, at least. It couldn’t be that different.

“Okay, I’m just… gonna get started so this can be over and done with,” Faye said, settling onto her haunches.

“Uh-huh, sure, you do that,” Casey hissed through her teeth as Faye wrapped her fingers around the shaft.

She made an uncertain noise and, throwing caution to the wind, began pumping it in her fist. Surely, even when using one’s mouth, there had to be some hand action involved. What surprised her was that Casey’s cock felt so silky smooth, and not to mention so warm to the touch. Firm, too. Squishy, sure, and malleable, but still so much like a rod of iron. There was a certainty to it, she found, as her hand glided up and down, up and down, up and down.

The glans was basically the clit, as far as she remembered from biology. She found it and rubbed tight, wet circles with her thumb, the slick of Casey’s precum smearing and making a mess of where her foreskin met the tip. One look at Casey’s expression told her it felt good. The precum, too; it was leaking all over Faye’s thumb, and curiosity reared its mercurial head. What would it taste like? Would it be warm, too? 

Probably not the sort of questions she was supposed to be pondering during a rote task. All the same, she licked her lips and found that her mouth had stopped feeling quite so dry.

“Faye,” Casey said, sound bemused, “I could give myself a handjob. The rule is that you have to use your mouth, so how about you wrap those pretty lips around my cock and start sucking, yeah?”

“R-Right, well, um… I’ll do my best, but just be aware you shouldn’t expect too much.”

Why was Casey wearing the sort of shit-eating grin that seemed like she knew a secret? “Oh, you never know, roomie. You might be better at it than you think.”

Not that the confidence wasn’t appreciated, but Faye certainly felt it may have been misplaced. The scent of sweat and sex were a heady mixture that already had Faye’s head swimming, and the rest of her swaying in place like a drunkard dizzy on fumes. Was she really going to do this? Was her first time sucking cock going to be on her knees, with Casey wearing that fucking smirk? She did seem suspiciously content with being caught in the act, not to mention acting pretty entitled for someone who mooched off Faye’s groceries. 

Didn’t really change anything, though. Rules are rules.

Seeing no way to avoid it, she rested her arms on Casey’s bare thighs, leaning in gingerly until she was so close she could feel the heat on her skin—a burning hot brand that existed for the purpose of plowing, intruding, claiming…

She had to bite down on her lip to stifle the needy little whine that threatened to spill out. Her curiosity about how it would feel in her mouth only grew more insistent, urging her forward, reminding her that there was no need to wonder. Tentatively, she stuck out her tongue and lapped at the head, and right away her senses were awash with the flavour; salty, bitter, and warm, almost savoury, and frighteningly palatable, but it was swallowed before she felt she could really get a handle on it.

Thankfully, if she wanted to taste it again—and, admittedly, she kinda did—she had a pretty good idea on how to make more.

“O-Okay, Faye, you got this,” she whispered to herself before engulfing the head, wrapping her lips around the shaft and swirling her tongue around the head in a bold, decisive move. Taking it a little further into her mouth, she sucked it shallowly before coming back up and planting a smattering of soft smooches on the tip.

“That’s it,” Casey sighed. “Just remember to mind the teeth, and… keep using that tongue.”

A shiver danced along Faye’s spine. The praise was glitter through her veins, urging her to take the shaft deeper. Before long, the comfortable weight of Casey’s hand found the back of her head, the gentle pressure of it working with her growing confidence to keep her in place and keep her mouth nice and full. 

Her reward was more precum. Perhaps describing it as ambrosia was a bit much, but she found herself wondering why nobody ever talked about just how dangerously addictive it could be. They could sell drinks based on the taste of Casey’s precum and, hell, at the very least, they’d have Faye lining up for it. Did all cocks taste this way, or just Casey’s? Was it some byproduct of her HRT?

Faye’s conception of herself had never really involved a trait like, ‘enjoys the taste and texture of her roommate’s precum’, but life was strange, she supposed.

“Ahm I doin good…?” Faye slurred around Casey’s drool-smeared cock, not waiting for an answer before going back down for more. The wet, lurid squelching sound mixed with her own whining mewls—sounds that, just a few minutes ago, she wouldn’t have dreamt of ever making around Casey. 

There may have been some tarnished, sticky pride to take in knowing that she was succeeding in putting on such an erotic display, but… could she really? It wasn’t a display. She was no actor succeeding in her role. This was just her body’s honest reaction, not even to receiving pleasure, but to giving it, and it didn’t escape her notice that her expression of that pleasure contrasted so sharply with Casey’s; she wasn’t mewling, she was restrained and calm and hissing through her teeth, undulating her hips in a slow, claiming roll.

To think that she’d gone from scandalised to being on her knees slobbering around her roommate’s fat cock in less than five minutes, and it was her who was moaning like a whore. The degradation of it lanced her clit.

“Mhm… I’d even say you might have a talent for cocksucking.” There was a dangerous glee in Casey’s eyes. “You sure you haven't done it before? Maybe, like, many times before? I mean, you seem pretty into it for a girl who’s just doing her duty. You’re lapping at it like a starved beast… oh, shit, is that it? Your girlfriend not putting out enough, Faye?”

Perhaps it was a good thing that her mouth was too full to make a rebuttal; she wanted to insist that everything was fine with her girlfriend, but she already knew Casey would probably just latch onto that as proof that her cock was just that good.

But, hell, maybe it was.

All the same, her answer came in the form of a disapproving scowl as she hollowed her cheek and took it another inch deeper, and then another, and honestly, Casey might’ve had a point. Maybe Faye did have a knack for sucking cock. Sure, it’d hardly been on her schedule for the day, but that only meant she’d improvised it, and she’d never turn down another notch on her belt.

The rhythm was easy to find, and almost hypnotic—bobbing her head up and down, swirling her tongue around the length and flicking it against the glans whenever she came all the way back up, her hand squeezing the base of Casey’s cock where she hadn’t yet mustered the courage to try and take it that far into her mouth.

Through misty eyes, Faye’s gaze journeyed up across the expanse of Casey’s slender belly and narrow hips, over her navel pierced with a simple silver barbell and stud, watching it undulate and flex as she breathed; even further up across her chest that was small but in no way modest, and at the end of the odyssey, at Casey’s face, all she found was a sense of awestruck wonder. Then and there, Faye realised that something about having a woman’s cock in your mouth forced you to see her in a whole new light.

Casey had the look of a conqueror, head lazily tilted back and to the side, eyes most of the way shut and yet pressing down upon Faye with all the weight in the world. She was up there, writ in stone, arms hanging back over the back of the couch as she received the service she was owed. The service that she deserved. She melted into the couch, the pendant sliding against her clammy, sweat-slick skin.

All at once, it came into startlingly horny clarity that she could—should—take it further. Casey deserved to be fully engulfed and to claim every inch of Faye’s mouth, and the thought of withholding that made Faye shudder. She needed to do a good job. Rules are rules. Her girlfriend would never begrudge her wanting to do a job well.

Drawing in a deep breath through her nose, she leaned in and took Casey deeper and deeper, until the head of her cock was just an inch away from kissing her tonsils—

“Ghhlhk—!”

Nope.

Her throat disagreed, spasming around the length, forcing her to jolt back sputtering and gasping for air.

“Really thought you’d be better at deepthroating by now.” Casey laughed, and it was an earnest, joyful sound, laced with a derision that only Faye could feel the bite of. “S’fine, though. This is hot as fuck too. Wish I had a mirror so you could see yourself. My roomie, the older lady with her big girl job, on her fucking knees with her chin covered in drool like she’s a fucking mutt.”

Faye’s traitorous clit ached. The words stung so good. Even though she wasn’t into that kind of thing. Even though she wasn’t meant to be enjoying this.

“I-I’m not a mutt,” Faye protested weakly, giving her best attempt at a glower. “Just because I have to give you a blowjob, doesn’t mean you can…” Each word was less defiant than the last, and far less convincing. In lieu of finishing her protest, she simply lifted her arm to her chin and did a poor job wiping away the drool.

“Go ahead, finish what you were saying,” Casey said.

Faye set her sights back on Casey’s cock. It was still desperately, feverishly hot and standing to attention. Her lips were already parting again on instinct. Between her thighs was a furnace, her pussy clenching around thin air. 

“N-No, it’s… forget about it.”

Clearly, that answer pleased Casey, if the satisfied smirk was anything to go by. “Well, then. My cock ain’t gonna suck itself.”

The pout that was forming and the indignance in her chest were both charred to ash by the hot length as she took it back into her mouth, but she’d barely managed to find her rhythm again when she suddenly felt Casey’s hand on the back of her head, followed by the sting of her hair being made into an impromptu handle.

“Fucking… easier this way,” Casey grunted, the tightening of her grip in Faye’s hair the painful precursor to her pistoning her hips up into Faye’s mouth, the smack of her pelvis against her wet, flushed lips resounding through the room.

Any last semblance of what might’ve passed for dignity in the act was annihilated with each lance into the back of Faye’s throat, her head fucked empty of every last coherent thought. With nothing to do but be useful by virtue of her mouth, she was left as little more than a cock-blanked ragdoll, her throat claimed utterly and completely as it spasmed for her pleasure.

Surrendering to cock must’ve been in Faye’s blood. How easily she took to the implicit instruction that her own input and her own effort was unnecessary, and that her warm, wet hole, usually reserved for important things like eating and breathing, could instead simply be repurposed as a fleshlight. Each time her lips reached Casey’s salty skin was a reminder that, yes, it was actually this that was her mouth’s primary purpose, and so she put up no fight, even as she choked and as tears left blistering trails down her cheek. 

Gluhck, gluhh, glughch gluckh—

The sounds were completely obscene. Casey’s pace was erratic and stuttering, relentless and without mercy, until they weren’t, and Faye’s limp body was released to fall onto Casey’s lap.

“Get on the couch, Faye.” It was a command. Casey peeled herself away from the sofa, kicking off the boxers that had been pooled around her ankles. 

“Whuh…?” was all Faye could manage to croak between gasps.

“I’m going to fuck your throat.”

It seemed that Casey hadn’t fucked her head completely empty yet. Alarm bells were ringing, no matter how faint, telling her that something was amiss with this, that this, for some reason, was where the line was drawn in the sand. “W-Wait, that’s… I-I dunno, that seems kinda… I mean, fucking my throat…?”

If only she knew why those alarm bells were going off.

“Yes, Faye, fucking your throat,” Casey said impatiently, fingers drifting over the polished surface of the pendant at her neck. “Like it’s a pussy. You don’t have to do anything but lay on your back and let me mould your throat into the shape of my cock. It’s pretty simple.”

“I dunno, it… seems like a lot, I mean… blowing you like I did is one thing. Letting you fuck my throat, that just seems… I mean, my girl—”

Despite Faye’s protest, Casey’s smirk was as satisfied as it was predatory, the pendant in her grasp beginning to glow faintly. “Your girlfriend won’t mind, Faye,” she interrupted herself to bark cruel laughter, “because she knows, just like you know, that you gotta let whoever you walked in on use your mouth however they fucking want, and you gotta be thankful for it, too. No matter how degrading, you gotta take it all and you gotta really, truly love it. Rules are rules.”

For that brief, blissful moment, Faye went away, swaying on her haunches with her eyes glazed over. Casey’s words were a brand upon her very perception of the world, imprinting a new reality upon her as the old one leaked out of her cunt and moistened her thighs.

“You’re… right, I guess.” She was completely dazed, speaking with a lopsided grin. “It was me who embarrassed you in the first place by walking in on you like that, um—I dunno why I was being so prudish about it. I’m sure if Gina walked in and found you like I did, she’d happily let you throatfuck her, too.”

Everything really made so much sense. Being degraded by her younger, less responsible roommate might’ve seemed unpalatable at first, but that was just Faye being selfish. And, oh, god—she shivered to think about what might’ve possessed her to try and deny Casey the right to plow her mouth, if that was what she wanted. She had to make amends!

“Oh, fuck, that’s so hot. Can’t believe they trusted me with this thing,” Casey snickered beneath her breath, before clearing her throat. “It was pretty humiliating for me, actually, so letting me dump a load into you is really the least you can do.”

“Okay, that makes sense, um… so I just lay back on the couch?”

“Uh-huh, there you go. Hang your head off the side of the cushion and open wide. Try and let your throat relax, okay? We need it open for this to work. Breathe through your nose and just try to let your muscles go slack.”

Casey loomed over Faye, and when Faye realised there was no hand coming to help her get up, she crawled over to the couch on all fours and clambered up that way, repositioning herself as Casey instructed. Being like this made Casey seem even more monolithic. 

Faye’s breathing grew fast with anticipation as the entirety of her vision became nothing but thick and very needy girl meat. Even after everything, she still hadn’t orgasmed; poor Casey must’ve been so pent up.

“Jaw wide,” Casey cooed. “Be a good fleshlight for me.”

Faye’s jaw fell open obediently, and she allowed it to relax as best she knew how, pushing her tongue down against the bottom of her mouth—which was, in a way, now the top of her mouth. She couldn’t help but grin as Casey aligned herself. She’d be the best fleshlight ever.

The first thrust came quickly, and with it, that comfortable sense of helplessness returned. There was nothing for her to do but lay there and serve her purpose.

It was freeing, in a way.

Maybe she’d just been too cock-addled to think about the inevitability of it, but Casey’s sack soon found its place against Faye’s face, slapping against her nose and her eyes in time with Casey’s thrusts like a heavy pendulum. She couldn’t help but notice how full they looked, and the mere thought of Casey’s cum made a full-body shiver tear through her. How delicious must the final product be if the precursor was already so moreish?

There was a part of Faye that stirred with the impulse to service them in some way, but she reminded herself that not only was that impractical, it was also unnecessary. Casey had said she wanted to use Faye as a fleshlight, and that Faye only had to lay there. Whatever Casey needed from Faye, she would take; the slapping of her sack against Faye’s face was just a meaningless consequence of the claiming of her throat.

“Fuck, this is amazing… lemme tell you, Faye, there’s nothing better than having my own personal fucksleeve to use whenever I want,” Casey panted. “I think I’m gonna… have to fucking keep you, shit, that thing your throat is doing around my cock, oh fuck, it’s like you’re milking me—oh shit—I’m—I’m so fuuuucking close…!”

There was nothing shallow about Casey’s thrusts now. Her right hand found Faye’s neck, gripping it tightly as she hunched over, leaned in, and speared into Faye’s throat. Faye was making all sorts of horrendous, desperate sounds and writhing in place, her body slick against the upholstery, but it was all for Casey’s pleasure; her survival instinct, much like Faye herself, had been tamed.

With one last stuttering thrust into the deep recesses of Faye’s warm mouthpussy, Casey’s cock throbbed and pulsed, twitching with imminent release. It seemed her throat really had been moulded to the shape of Casey’s cock. It had accepted it as its conqueror. It no longer considered itself as having an invader it must eject. Casey’s cock belonged there.

“Ugh, fuck! I—” Casey grimaced, snatching at her chest until she caught the pendant. “F—Faye, fucking remember, once I cum, you have to—fuck—clean me up like a good little cocksleeve, and… fuck it,” she ground the tip of her cock deeper, laying greedy claim to every extra milimetre, and spoke in a gasp all at once, “you have to call me daddy and say thank you for the honour of polishing my cock off rules are rules!”

The litany of words were a divine decree that struck Faye’s perception like a lightning bolt from heaven. Casey shot rope after rope of warm, pent-up cum straight down her gullet. It never even had a chance to hit her tongue, and Faye wasn’t aware enough to know she was missing the opportunity to taste it.

“Fuck, yes, ohhhh my god I came so fucking much,” Casey snarled, massaging the bulge in Faye’s throat. “Be a good fucking fleshlight and swallow every,” thrust, “last,” thrust, “drop!”

As if Faye weren’t already zonked from being ruthlessly throatfucked, the new directive was still settling over her thoughts, proliferating through her reality and stretching her common sense like taffy. Everything Casey had reminded her of was common knowledge. She probably knew all along in the back of her head that this was always going to culminate in her polishing Casey’s cock clean and effusively thanking her for the opportunity while referring to her as daddy. 

That was just normal. 

Honestly, ask a hundred people on the street about it and you’d get a hundred people looking at you weird and saying ‘of course that’s what you have to do’. How absurd of her to have somehow forgotten that.

Awareness returned in a trickle, and the first thing she felt was an emptiness in her mouth. Eyes fluttering open, she was met with the sight of the cock that had thoroughly used her, connected to her lips by a long, bowing string of spit. It was still hard, for the most part, and glistening with a mixture of fluids as it bobbed in the air.

“O-Oh, daddy, I’m so sorry,” Faye said, scrambling to her knees. How uncouth of her to lay there dozing while Casey’s cock still needed her attention! “Please may I do the honour of cleaning you up?”

“Sure you may.”

“Thank you,” she said, taking the cock right back into her mouth. There was a look of utter fuck-drunk bliss on her face as she slid her lips back and forth along Casey’s cock, swirling her tongue around the length to clean every last inch and sucking up whatever of the mess she’d made that remained. “Thhahhk youth, hahdhy… ish my plethuh for youth to uthe my mouth…”

“I can’t understand a word you’re saying, but that’s okay. I don’t really need to understand a fucksleeve.”

This time, when Faye took it all the way to the hilt, she didn’t even gag! Hollowing her cheeks, she tilted her head and sucked upwards and ran her tongue around the head one last time for good measure before letting it drop out of her mouth with a pop.

“Good girl.” Casey patted her on the head idly with one hand and scratched at her stomach with the other, eyes already drifting to the kitchen when a thought seemed to strike her. “Wait, didn’t you say your girlfriend’s coming over tonight?” 

Faye nodded. “That’s why I got the groceries, daddy.”

“And you still haven’t told her about how much of a good cocksleeve you are for me?”

“Uh, no,” Faye said with a polite laugh, settling back onto her haunches. “Why would I? We don’t talk about work with each other, either, or what we had for lunch.”

“Huh, well, isn’t that just something?” Casey’s wolfish grin returned, the pendant slipping between her finger and her thumb. “I can’t wait to meet her.”