Late nights with my sister [FM] [twincest] [porn] [handjobs] [cum] [infidelity] [cuss words]

It’s 1:03am. I guess some people might call that late, but it’s typical for me. It takes me this long to finish all my homework. Probably because I don’t start until after 10. But whatever, I’ll be fine tomorrow, I don’t need much sleep.

The last thing to do before sleep… I open up an incognito tab, find the right video, get some tissues ready, and sit the laptop on the bed beside me.

I’m starting to get really into it, watching this girl swallow this guy’s huge cock with the camera from his point-of-view, when my door opens and my twin sister, Dorothy, leans in, saying, “Hey, Colin, can you help me with… uh, my, uh…”

She trails off as I furiously try pulling the blankets up over my erection, closing the lid on the laptop, and scrambling for any plausible story to cover what was happening.

“Jesus, Colin, lock the door if you’re going to be doing that,” Dorothy says.

“It was locked!” I say, even though it clearly was not, I’m just desperate to say anything that might hide my embarrassment.

“What are you watching, anyway?”

“Nothing!” I say a bit too forcefully. Play it casual, dumbass. But it doesn’t matter, Dorothy’s already grabbed my laptop and flipped open the screen.

“Wow, look at her go!” Dorothy says. I feel my cheeks warm with flush.

“Could I have my laptop back please?” I’m holding the sheet to my crotch, hoping the bunched up fabric hides my erection. Not that I’ll be able to finish after this.

“No,” Dorothy says, laughing at me, “Let’s have family movie night.” She sits down on the foot of my bed and sets the laptop on my desk, the video still playing.

She points at the screen, “So does this one have a, you know, plot? Or is she just sucking him off?”

The question seems rhetorical. I don’t answer.

“How do you think he lasts that long?” she asks next, “There’s no way that’s real. My boyfriend never can make it more than a couple minutes during oral. And that guy is giant! How does she get it down her throat?”

She wants to play the TMI game? Fine, we can both play at that. I say, “She suppresses her gag reflex.”

“Oh, what,” Dorothy said, “You’re the expert? And how exactly does one ‘suppress their gag reflex’? You suck a lot of dick?”

“No,” I say, “I don’t know, it’s what girls do.”

Dorothy laughs at me again. “Kelsey won’t even blow you, how would you know what girls do?”

Kelsey is my girlfriend, my first. We do, in fact, have sex. However, Kelsey always says the idea of blow jobs gross her out. But nobody knows that, I’ve never told anyone.

“How do you…” I stammer, “That’s total bullshit. Who said that?”

“It’s totally not bullshit, you should see yourself blushing, I could fry an egg on your face. And anyway I know it’s not bullshit because Kelsey told me herself.” Dorothy takes a mocking tone, “’I’m a perfect princess who’s too good for oral sex, unless of course it’s being given to me.’”

What the fuck? “I’ve never… we’ve just had sex, she told you she wants me to … eat her out?”

Dorothy rolls her eyes at me. “You sound like such a tool. No, she didn’t tell me that she wants you to ‘eat her out,’ she’s a goody princess, remember? Princesses never admit their desires.”

On the video screen the girl pulls off the guy, and he strokes his cock furiously, cumming on her face.

Dorothy points at the screen, “Look at that shit. She’s making him jack off all on his own. Not only can she not suck him off proper, she can’t even fall back on a handjob. How do you get off on this? It’s terrible.”

I don’t know why, but my sister criticizing my taste in porn? I somehow feel offended. “What? She’s hot.”

“When I get a guy off, I make sure I actually get him off. And she’s old enough to be our mom. And her tits are fake, look at the way they don’t move. Real tits move like this,” Dorothy grabs her chest through her shirt, squeezing her own breasts.

I suddenly become very conscious how little clothing my sister is wearing — just a thin white shirt and black panties — and how curvy she’s grown. She’s my sister, I grew up with her, this shit shouldn’t matter, but she’s got thick hips and large tits, and her tight clothes are showing them off. I know, in the logical part of my brain, that she’s objectively attractive. And even if I didn’t, my friends constant reminders of this fact would clue me in. Many of them would kill to be where I am right now. But she’s still my sister, I just don’t think of her like that. Right?

But damn if Dorothy doesn’t have some nice tits. And holy shit do those lace black panties emphasize her ass well.

No, no, we don’t think those thoughts.

Dorothy grabs my laptop again, saying “Let me show you a way better video.”

“I’m not taking porn recommendations from … you have a premium account?”

Dorothy looks over her shoulder, grinning, “No, but dad does. And I just happen to have his login.”

I feel myself shrivel in disgust. “Why can’t I have a normal family?” I ask.

“Oh shut up, they’re all like ours,” Dorothy says, “Now, here, watch this. This one’s my favorite.”

I don’t know what the fuck I’m even doing, sitting here watching porn with my sister. But the video features a built guy with two women — one brunette, one redhead — both pale and thin, so it has my attention. They are all being gentle and nice to each other, which, if for some fucked up reason, I had to predict my sister’s taste in porn, makes sense. They are in the bedroom of some mansion, and soon they’ve arranged themselves in a circle of oral sex. The camera gives them each equal screentime, and if they’re faking enjoying the experience, then they’re doing a good job. I have to admit, it is a pretty hot clip, and I feel my cock stiffen.

I fold my knees up to tent the sheet and hide my erection from Dorothy. But she takes this as an invitation to scoot over and lean back against my legs. This is fucking me up, we used to do this when we were kids, but back then, Dorothy’s hand wasn’t down in her panties like it is now. I can feel her taking quick, sharp breaths, and I realize she’s stroking her pussy in time with the girl on the video.

“What the fuck are you doing?” I hiss at her.

“What?” she asks, “It’s porn. I’m masturbating. That’s what porn’s for.”

“Go back to your own room!”

She rolls her eyes at me, “Don’t be such a prude.”

Then Dorothy leans forward and quickly yanks the sheet off me. I’m not expecting it, so I grasp for the corner of the fabric, but it slips between my fingers. I hurriedly press my legs together and push my hand down to my crotch to cover myself, but with my erection, I’m not able to hide much.

Dorothy leans over my knees and studies my crotch, “Hah! I knew it. You’re hard. I told you this one is good.” She turns back to the screen, saying, “Nice dick, by the way, Kelsey’s lucky.”

“Uhh… thanks?” I say, not really sure how to take that. But Dorothy turns back to the screen. Then she wiggles herself between my legs to lean back against me.

“There, much more comfortable,” she says, but my cock is now pressed between my belly and her ass, and I can feel it dripping. I don’t want to admit this to myself, but my sister is turning me, I cannot deny it.

I can see her hard nipples tenting the fabric of her shirt as her chest heaves with each breath, her hand returning to work inside her panties. I can feel my own breath starting to grow heavier, and it takes all my will not not grind my hips into my sister’s ass. What the fuck am I doing?

In the video, they’re working each other for a while using just their tongues. Then through some unspoken agreement (or trick of editing) they pull out of their circle, and the guy and the redhead together eat out the brunette, giving her an orgasm.

“Here’s where it gets good,” Dorothy says. I can feel her really getting into it, her fingers flicking furiously fast. I look down at her, see her tits bouncing, nipples pulling at the fabric. Holy shit, she’s not goofing around, she’s actually getting herself off.

It just happens automatically, I reach down and squeeze her tits. She doesn’t stop me. No, she actually acts like she likes it, moaning in pleasure. I pinch her nipples, she gasps. It is so hot, but this shit is so fucked up.

On screen, the guy and the brunette are now licking the redhead’s pussy, giving her a turn to moan and writhe. I look back down at Dorothy, groaning in time with the girl in the porn. I drop one hand from her tits to Dorothy’s crotch, sliding it under her panties, my fingers joining hers.

“Put your fingers in me,” she whimpers. And I do, sliding them in and out of her sopping wet pussy while her fingers focus on her clit. And when the redhead on screen comes, Dorothy does too.

She lays against me, relaxed and panting, and I pull my hands off of her. Did I just really get my sister off?

“Stop grinding your cock on my ass,” she instructs me. I look down, discovering that I have been doing that very thing. Oh good lord, I can see my pre-cum on her back. But Dorothy just says, “Watch the screen.”

The two girls gather between the guy’s legs, and are toying and teasing his cock and balls. The redhead kisses the tip of his dick, and then sucks him in. At the same time, Dorothy pulls away, turns around to face me, and leans down between my legs. She pulls my hands away, and grabs my cock for herself. With an iron grip, her fingers wrap around the base of my shaft, and she slowly pulls then down the length of my cock, until her thumbs end up massaging my glans.

It is so fucked up. But it feels so wonderful.

I lean back and push my hips forward, watching my sister’s hands stroke my erection, better than I could have ever done to myself. Hell, this even feels better than the awkward, fumbling sex Kelsey and I have had.

And she is watching me enjoy it. Does making eye contact make it weirder? I don’t know, but when she flashes me a grin and a wink, I feel my balls flex. I may not have a lot of experience, but seeing my sister focus all her attention on getting me off — I don’t know if I’m ever going to find any hotter sex than this.

In the video, the girls have the guy cumming, using their hands to pump his dick onto their faces. I feel myself not far behind, and I guess Dorothy can too, since she grips me tighter, pumping me harder. I know I’m about to cum, and I scramble for a tissue — I don’t want to mess my bed.

But Dorothy has other plans. She smiles at me, then drops her mouth to my cock, kissing the tip. Her tongue darts out, licking the head of my cock, while she continues stroking my cock so fiercely. A handjob between siblings is one thing, but I don’t want to cum in my own sister’s mouth. But she’s not leaving me any choice.

I feel my dick twitch and spray a load of semen between Dorothy’s lips. She keeps pumping, and purses her lips to kiss my dick, and I blast a second load into her mouth. She doesn’t let up her hands any until my cock stops pulsing, all its cum drained into her.

Dorothy makes a show of swallowing my load. “What the fuck,” I say.

“I don’t know,” Dorothy says, “I know you don’t like making a mess.”

I can’t decide if that’s gross or hot. But it’s not what I meant. “What the fuck about all of this?” I say.

“Oh, that,” Dorothy smiles, “It makes me feel less guilty about going down on your girlfriend.”

My cum-addled brain is slow on the uptake, and all I manage to say is, “What?”

“Like, now we’re even,” Dorothy says, sitting up.

I try to think back… Kelsey had stopped by a couple days ago, and she had spent some time with Dorothy after she told me she was going home. They were just talking, though, right? “Thur… Thursday?”

Dorothy thinks about it. “Yeah, that was the last time. But we’ve been going at it for months,” she says, then gives me a look, “Don’t look so upset. She’s obviously not your soul mate, but she is cute.”

Then a mocking smile creeps over Dorothy’s face. “Maybe one day you can even get her to blow you.” Then she gets that look that means she’s having an idea. “I bet we could get her to have a threesome with both of us!”

I say nothing, but I think I must look shocked.

“Wouldn’t that be a sight to see? Your perfect princess Kelsey spit roasted between us?”

I say, “I think we both have to be guys for it to be a spit-roast.”

“Details, pah! I knew you’d like the idea of corrupting her. Together we can turn your princess into a sexy little whore.”

Dorothy climbs off my bed. “Anyway, it’s late. You should get some sleep.” She makes to leave my room, then pops back in. “You did ok with your fingers, by the way, but if you ever want to learn to be really, amazingly good, I can show you some tricks.” Then she’s gone.

What the fuck did I just do?

Source: reddit.com/r/sexystories/comments/fwq96n/late_nights_with_my_sister_fm_twincest_porn