Shortly after Annie turned 29, her biological clock went off in a big way. Over the course of a few short weeks, she became baby crazy, to the point she was bitterly jealous of anybody with a child. Looking at her, it was hard to see why she was having such trouble getting pregnant; standing at 5'7" tall, with wavy golden-red hair, deep green eyes, few freckles, beautiful pale skin, breasts that fluctuated between a C and D cup, depending on the bra, and an effortlessly trim figure, much to the envy of every woman she met. Despite her beauty, she was single, with no time for the dating game due to the demands of her HR job in a large corporation. Sure, adoption was an option...for other women, but Annie would have none of it; she wanted a baby to grow inside her, one that she could say was unquestionably hers.
Annie was feeling especially desperate for a child around the time when she had to travel home for her father's 50th birthday party. Long ago, she'd decided to take a month off work in order to catch up with her family. She assumed her younger brother, Jeff, would have done the same. A few days before heading home for the party, though, she received a text message from him saying that his fiancee, Sally, was really feeling sick and so he could only spend 2 days at most away from her. Fucking typical Sally. Annie had never liked her brother's fiancee, who always seemed to ooze an attitude of "I'm better than you" whenever she was around Annie.
It probably didn't help that everyone who had met both girls commented on how remarkably similar they looked. Same hair, same eyes, and same blessed chests. While Annie was disappointed that Jeff's visit home would be cut drastically short, it'd be great to have some time alone without fucking Sally around. All this was swimming around Annie's head on the 5 hour drive to her hometown from the city she now called home. She smirked to herself, wondering if she was a bitch for being happy about Sally's illness. Hell, she's probably not even sick. Probably just on her...period. And that's when it hit Annie. What fucking awful luck, her most fertile time this month would just happen to be the few days either side of the party. There's no way she'd meet and have sex with anyone at her father's birthday party. They'd all be too old, or too related to her. And that's when Annie had the strangest thought she'd had in quite some time.
No, no way. That's too gross and desperate, even for you. No matter how much you want a kid, there's no way in hell you'd seriously consider THAT, is there? A moment passed and she felt a familiar warm tingling in her crotch. Hmm, apparently so. Sure, why not? It's worth a try. Just don't tell him why exactly, and Jeff would be ecstatic to fuck you. Lord knows he's had a huge crush on you forever.
That's when Annie decided to have her brother's baby.
Apart from that, the long drive home was pretty uneventful.
Annie arrived home and settled into her old room as though she'd been away for weeks, instead of almost a year. Jeff had arrived less than an hour before her. Her father was thrilled to have his beautiful daughter home for a whole month, and was just as happy that his son Jeff would be home for a couple of days. Instead of unpacking, the family spent a while catching up on each other's lives before their father was called away on business. Apparently, even when you're self-employed, you don't get too much time to yourself or your kids. Once their father had left, the two kids continued their catch-up until Jeff politely excused himself to go and unpack his suitcase properly. Annie considered following him upstairs, but instead took the opportunity to properly prepare for her confrontation with Jeff.
Sneaking past his room to her own, Annie shut her door quietly and changed from her lazy driving clothes into what she called her "sexy yet casual" summer dress, a loose dress with a nice floral pattern on a black background and a hemline that sat just above her knees. Sure, it was a simple cotton thing, but she'd always liked the way the dress had complimented her figure and its considerably revealing neckline. After making a few adjustments, she felt that she was ready and approached Jeff's door with determination.
"Jeff?" He was hanging up what she assumed was his outfit for the party, a predictably conservative long-sleeve shirt and sensible dark dress pants.
"Uh-huh," he replied, without turning around.
"Look, I really need to talk to you about something that's been bugging me for a while now." That got his attention; he turned around, concerned.
"Yeah? What's up, Annie?" She crossed the threshold into his room.
"Not quite sure how to say this, but..." She tussled her hair, hoping it would look like a nervous habit. "Um...I know about your feelings for me, Jeff." She felt her face turning a bright red, but hers was nothing compared to Jeff's face. Jeff was clearly lost for words; he simply stood there, mouth agape. The silence was deafening, and Annie had no choice but to continue. "I've been doing a lot of thinking, and..." Annie stepped closer to her brother while a hand reached behind her and silently unzipped her dress. "...And oh God, I want you too, Jeff." She delicately slid the straps of her dress off her shoulders and it fell to the floor, barely making a sound. She stood there, gazing into Jeff's face while he tried to process the sight of his older sister standing completely naked in his childhood bedroom, begging him to fuck her. As the walls of the room could attest, this was something he spent many, many late nights fantasising about. And now that the moment had finally come, against all odds, he could only think of Sally.
"But...Sally...I'm, uh, we're engaged."
"As some incredibly wise person said, dear brother, what she doesn't know won't hurt her. One bit." Oh God, her breasts. And, oh shit oh shit, her pussy...it looks so smooth. "Come on, Jeff..."
That was all it took.
Despite his trembling hands, he undid his belt and removed his pants faster than he'd ever done before, revealing his ...decidedly average cock, very hard at 6 inches. Sure, she'd had bigger, but fuck it, she needs a baby. She removed the rest of the distance between them and kissed him briefly on the mouth, whispered in his ear as lustfully as she could muster, "Fuck me, little brother." Next, he felt himself being led to his bed, where Annie lay down with her legs spread wide, her breasts jiggling with every small movement she made, and began slowly rubbing her clitoris. Jeff could she she wasn't faking her enthusiasm, as her smooth vagina was glistening moistly in the golden afternoon sun.
"Uh, Annie? I, um, didn't bring any condoms?" Fuck! You stupid idiot, of all the things you could say to her?
"Shh, it's fine, I'm on the pill. Just...Dad could be back soon! Please, I need you inside me, Jeff." That was enough for Jeff, and you couldn't really blame him. He'd wanted Annie since he was 16. Now, 9 years later, he was finally getting his wish. Forgetting he still had his damn polo shirt on, he climbed on top of her, sliding his cock into her warm and welcoming pussy and began thrusting with undeniable enthusiasm, grunting with each thrust inside her. Annie obviously needed a bit more to match her brother's levels of excitement, so she asked her brother, "Mmm, can you just...shift a little bit? I wanna cum while you fuck me." Jeff happily obliged his sister, and propped himself up by his arms while she rubbed her clit back and forth with one hand, and used the other hand to play with her breasts, again for Jeff's benefit. Watching his sister rub and pinch her own nipples, masturbating as he fucked her, was too much for Jeff and seconds later, before he could warn her, his body was jerking madly.
"Uggghhh..." he moaned loudly, shooting thick white cum inside his sister's pussy. Annie could feel each spurt of cum, there must have been almost a dozen in total. She was undeniably unsatisfied with the sex, but at least she had his cum inside her, when she was most fertile.
"Oh fuck, oh shit, I'm so sorry, Annie," Jeff moaned. "I, I haven't cum in forever, with Sally being sick and everything, and she hates it when I jerk myself off, she says my cum belongs to her or something, I...I'm sorry." He propped himself up again and began withdrawing his now virtually soft cock from her.
"Oh no, Jeff." He felt a firm hand on his ass, preventing his withdrawal. "You're going to fuck me again. Now." Clearly, Jeff realised, Annie was a girl who would not stop until she got what she wanted.
Annie was now quite used to raising a cock from the dead for another round of fucking. She released his ass cheek from her grip and used her hand to pull her brother's face to her own. She gazed deep into his brown eyes as her mouth found his and began kissing her brother passionately and almost forcefully. He moaned, she moaned back. She ran her fingers through his short, dark hair with one hand and rubbed his back and ass with the other. He opened his mouth and, with slight hesitation, she allowed his tongue to dance with hers. She let this continue for about 30 seconds before breaking the kiss, and released his head, instead grabbing his hand with hers. Jeff watched as Annie moved his hand to her breast, and he began squeezing. She could tell it was working; the soft cock inside her was rising again, promising her another, longer round of taboo babymaking.
The thought of finally becoming pregnant to her brother excited and aroused Annie much more than the thought of fucking her average-looking brother with his average-sized cock ever could. Especially the thought of being pumped full of another round of cum while he fucked the last round of cum deeper and deeper into her pussy. Without even realising it at first, Annie found herself humping Jeff's hardening cock, moaning loudly each time his cock was deepest inside her. Naturally, Jeff was thrilled to see his beautiful sister enjoying his cock with such vigour. He propped himself up by grabbing her breasts, squeezing them with each thrust, and looked intensely into his sister's beautiful green eyes.
"Ooooh, fuck me, Jeff...fill me with your cum!" Oh shit, what if that sounded like all she wanted was his cum? "I've wanted you for years, babe. This is like a dream come true..." Yeah, that should do.
"Mmmm, me too, Annie..." Sounds like she enjoys dirty talk. In reality, it aroused Jeff much more than it aroused Annie, but she let him continue. "God I love your big tits, and the feel of my cock inside your beautiful warm and wet cunt..." If only he knew how much Annie hated that awful word.
The pair continued fucking for several minutes, Jeff enjoying the view too much to ever suggest a change of position. Annie summoned all her acting skills to convince him she was enjoying the sex just as much as he was. Before long, though, she really just wanted it to finish.