One Night in Sienna

"That works for me, I really fancied some cock." Sienna grins, as we both reveal our blue straws. "Don't worry, I'll make sure you ladies are satisfied after." She boasts to Rosie and Marie, who seem more than comfortable with each other at this point as they smirk at each other. "Should we take it upstairs? I don't want to spoil myself for the others." Sienna asks, I'd say she was arrogant, but so far she's shown she can walk the walk.

I nod, and we both stand to head upstairs. "I'm coming too." Poppy decides, following alongside us. Once we reach my room, I shut the door behind us, Poppy sits on the chair near my desk, while Sienna lays seductively on the bed.

"So, tell me, Popsicle, do you like watching your brother fuck other women? Does it make you feel... Obedient?" She asks, causing my sister to gasp slightly, and slowly nod. "I thought so, I bet you wish the other girls would talk dirty to you while they're doing him. They're probably too awkward, don't want you to think they're trying to steal your man."

Wait, does Sienna know we're a couple? I mean, it's not like it's a secret, I just don't recall telling her. So far, this foreplay seems more focused on my sister than me.

"It's not like I enjoy the adultery bit, I just... I like feeling like I'm owned by him. Like he can fuck who he wants, and I won't do anything... Like I'm beholden to him." Poppy elaborates, unable to resist touching herself. It's the first time I've been able to actually see her pussy as she masturbates, I can see how wet she gets from here.

"Of course, the sweetest, most innocent one has the dirtiest mind. I think we're gonna have some fun, girl." Sienna smiles, before finally turning to me. "So... I've been looking forward to this... I'll do anything you want me to, right now I'm your slut. You can use me however you please." She offers with a moan, flipping over to her back and shaking her arse at me.

She said she likes it rough, and her fantasy is being used... And she seemed to get Poppy's perspective. Seems like she's a submissive too... I've never really thought about sex as a domination or submission scenario, sure I've talked dirty, but my style has always been to do whatever's right to please the girl... It's kinda weird focusing on my own pleasure for once.

I walk closer to the bed, and past Sienna, slapping her perfect round arse as I go. I then get onto the bed in front of her face, my dick desperately hard. Grabbing the back of her head, I thrust forwards, and she accepts me into her mouth as naturally as air. The feeling is different from when I usually get blowjobs, Sienna's able to take my length into her throat, so it feels tighter, hotter.

I keep fucking Sienna's face, while locking eyes with Poppy, who's going to town on her clitoris. I think about the discussion before, and decide to act on it. "You like seeing me use my slut?" I ask Poppy, who moans in response and barely manages to nod. "You really are a dirty girl, touching yourself like that, I think you should get down on the floor. On your knees." I order her. As if possessed, she follows my instructions, kneeling down on the floor, still playing with herself.

I can almost feel an orgasm coming, but it's way too early, instead I pull myself out of Sienna's mouth and grab her by the neck. Sienna had told us her safe word over breakfast, it's 'strawberry' ironically, I listen for her voice to see if she says it, but, she just seems to chuckle. I use my leverage to throw her onto her back, with her head hanging off the end of the bed.

"Look at this slutty pussy, you're so wet just from being facefucked." I observe, gently slapping her hole. "Or maybe it's because Poppy's watching you be a whore. Do you like being watched, whore?" I ask, escalating my degradation, still no sign of the safe word, I line my cock up with her entrance as I continue. "Tell me, bitch, tell me you love being watched, or I won't put it in."

"I love it." Sienna replies immediately. The usual confidence in her voice replaced by the sound of lust. "I love being watched while I act like a whore." She repeats. "So please, put it in me." Thought she'd never ask. As requested, I press my shaft inside of her, drawing a low moan that makes her tits shake.

As I begin thrusting, the sight seems to be too much for Poppy, who begins to shake and gasp, I can't let this opportunity pass me by. "Looks like you made my sister come by being so slutty, by fucking her boyfriend, you should apologise. Say sorry for being such a little slag." I tell Sienna, who doesn't seem too far off herself.

"Oh... I'm sorry Poppy. I'm sorry my slutty hole is being filled up by your boyfriend's cock." She groans. "He's making me feel so good, I'm sorry I'm such a whore." Poppy seems to have a revelation from this, her eyes widen as she licks her lips.

"That's enough, get on top of me, ride me like the cock-hungry slut you are." I decide, pulling out of Sienna, and laying on my back. As though my words were law, Sienna sits up and mounts me, sliding my slickened pole into her pussy. She bounces on my cock with an urgency that tells me she's going to come soon, I grab her massive breasts and massage them and she rides me.

It's so intense that I don't notice Poppy lay down next to us until she strokes my arm. "I'm... Still horny. Can I... I mean, can you... Lick me?" She whispers to me. I almost blow my load right there, but I just kiss her in response. I nod, and the smile on her face tells me how much she needs this.

Sienna seems surprised as Poppy climbs onto my face, at least she did until my vision was obscured. I can't see much, but my tongue knows the way. I can hear her moan as I begin licking her cunt, all the while Sienna's still riding my cock like her life depends on it.

"Seeing you get eaten out is so hot." Our cousin moans. "How does it feel?" She asks. With the way both are positioned, I guess they're looking right at each other, that probably makes it even more intense.

"It feels... Oh fuck, it feels so fucking good. I feel... Like you. Like a slut. Letting my brother eat my pussy- Oh fuck!" She yells, as I feel Poppy shake and stutter as she orgasms again, she keeps moaning louder, until suddenly it halts, and I hear the sound of kissing. Sienna and Poppy are kissing. I feel Sienna's pussy tighten around my cock, and I can't help but unleash my semen into her, as I'm overwhelmed by all the pleasurable sensations flowing around my body.

Poppy gets down from her perch, and lays next to me, clearly as exhausted as I feel. "Wow, not bad, not the best, but you did pretty good." Sienna decides, barely out of breath. "Not everyone can make me come on the first try, so... You know, kudos!" She jokes, not bothering to sit down. "Now... I made a couple of girls a promise."

Sienna... She really is some kind of sex machine.