Birthday Surprise For Daddy

The house was supposed to be empty. That was the only thought running through Marcus's mind as he stepped through the front door three hours earlier than expected, his business suit jacket slung over one shoulder, the August heat clinging to his skin. The conference had wrapped up faster than anticipated, and rather than suffer through another night of hotel pillows and overpriced room service, he'd caught the last flight home to Phoenix.

"Rachel? You here?" he called out, dropping his keys into the ceramic bowl by the entrance. The house remained silent, save for the hum of the air conditioning unit working overtime against the desert heat.

His stepdaughter Rachel was supposed to be at her summer internship until six, and his wife—Rachel's mother—was on a two-week cruise with her sister. For the first time in months, Marcus had the sprawling suburban home to himself.

He loosened his tie as he climbed the stairs, his dress shoes clicking against the hardwood. At forty-two, Marcus kept himself in shape—early morning runs, weights in the garage, the discipline of a man who'd built his own construction firm from nothing. The gray at his temples only seemed to enhance his rugged appeal, or so his wife often told him. But lately, their marriage had settled into a comfortable roommate phase, the passion cooled to embers.

He reached the master bedroom, eager for a shower and perhaps an evening of uninterrupted sports on the living room television. That's when he heard it—a soft, rhythmic sound drifting from down the hallway. Not from the master suite, but from Rachel's room.

Marcus paused, his hand on his own doorknob. The sound came again—faint, breathy, unmistakably feminine. A moan, barely contained, followed by the wet slap of skin against skin.

She's masturbating, he realized with a jolt of inappropriate awareness. Rachel was twenty-one, home from college for the summer, a young woman in every sense of the word. But she'd always been "his kid"—the girl he'd helped raise since she was thirteen when he'd married her mother. The idea of her as a sexual being felt simultaneously obvious and forbidden.

He should walk away. He knew he should. Every instinct told him to retreat downstairs, make noise, give her privacy to finish whatever she was doing in the sanctuary of her bedroom.

Instead, Marcus found himself moving silently down the hall, drawn by a force he couldn't name. The door was cracked open—just an inch, just enough. He told himself he was checking to make sure she was okay, that the sounds weren't of distress. It was a lie, and he knew it even as he positioned himself to peer through the gap.

What he saw stole his breath entirely.

Rachel lay sprawled across her bed, her college textbooks forgotten on the floor where they'd been tossed. She was completely naked, her body bathed in the golden afternoon sunlight streaming through her window. At twenty-one, she'd grown into a woman that turned heads everywhere she went—curves that her bikini could barely contain at the pool, legs that seemed to stretch for miles, full breasts with rose-hued nipples now peaked and hard.

But it wasn't just her nudity that made Marcus's mouth go dry. It was what she was doing, and what she was looking at.

Her slender fingers worked furiously between her spread thighs, her pussy glistening with arousal, shaved smooth except for a neat landing strip of dark hair. Her other hand squeezed her breast, pinching her nipple with desperate intensity. And on her laptop screen, paused on a video, was an image that made Marcus's blood run cold and hot simultaneously.

It was him. From last month. The family pool party where he'd worn those damned swim trunks, the ones that had been too tight after years in storage. The video was clearly shot on a phone, zoomed in on him climbing out of the water, the wet fabric clinging to his groin, outlining the substantial bulge of his cock in explicit detail.

"Fuck, Daddy," Rachel whimpered, her fingers circling her clit faster. "Fuck, you're so big. I want it. I want your thick stepdad cock inside me."

Marcus's hand flew to his own groin, his cock already hardening with shocking speed. She's fantasizing about me, he thought, the taboo nature of it making his arousal spike impossibly higher. My stepdaughter. My little girl. Touching herself to thoughts of me.

He should leave. He had to leave. But his feet remained rooted to the floor, his eyes glued to the erotic tableau before him.

Rachel's hips bucked upward, her wet pussy seeking more contact, more friction. She reached for something beside her on the bed—a massive dildo, thick and veined, at least eight inches of flesh-colored silicone. Marcus watched, mesmerized, as she dragged the toy through her folds, coating it in her arousal before positioning it at her entrance.

"Give it to me, Daddy," she begged the empty room, her voice thick with need. "Stretch my tight college girl pussy with your big daddy dick. I've been such a bad stepdaughter, thinking about you every night. Punish me. Make me yours."

The dildo pushed inside her, and Rachel's back arched off the bed, her breasts thrust upward, her mouth falling open in a silent scream of pleasure. Marcus could see her pussy lips stretching around the girth, could see how wet she was, how ready. His own cock was fully erect now, straining painfully against his dress pants, a wet spot forming where pre-cum leaked from the tip.

He unzipped before he could stop himself, his hand wrapping around his thick shaft. He was large—eight and a half inches of heavy, veined masculinity that had always been a point of pride. Now he stroked himself slowly, watching his stepdaughter fuck herself with a toy while she imagined it was him, while she called him Daddy in that breathy, desperate voice.

"Harder," Rachel gasped, working the dildo in and out of her slick channel. "Fuck me harder, Daddy. I want to feel you everywhere. I want your cum filling my unprotected pussy. Breed your stepdaughter, Daddy. Make me your little fucktoy."

Marcus's grip tightened, his strokes becoming more urgent. The words were so wrong, so filthy, so absolutely forbidden—and yet they drove him wild with lust. He'd never thought of Rachel this way, had never allowed himself to notice the way her tank tops stretched across her chest or how her sleep shorts rode up her ass in the mornings. But now, seeing her like this, hearing her darkest fantasies spill from her lips, he couldn't unsee it. He couldn't un-want it.

Rachel's pace quickened, her hips meeting each thrust of the dildo. Her free hand moved to her clit, rubbing tight, desperate circles. "I'm close, Daddy. I'm going to cum thinking about your cock. Can I cum? Please let me cum all over your big dick."

"Yes," Marcus groaned, the word escaping before he could stop it.

Rachel's eyes snapped open, her head whipping toward the door. For a moment, time froze—her fingers still buried inside her, her pussy spread and glistening, her shocked gaze meeting his through the crack in the door.

Marcus expected screaming. Expected accusations, tears, demands that he leave, that he never speak of this, that her mother hear every sordid detail.

Instead, Rachel's shocked expression slowly transformed into something else entirely. Her lips curved into a seductive smile, her eyes heavy-lidded with arousal that hadn't dimmed despite the discovery. She didn't cover herself. She didn't pull away. She held his gaze and deliberately pushed the dildo deeper, her breath catching as it filled her completely.

"How long have you been watching, Daddy?" she asked, her voice a purr that vibrated through his entire body.

Marcus pushed the door open fully, no point in hiding now. His cock hung heavy in his hand, still slick with his own arousal, impossible to deny. "Long enough to know you've been a very bad girl," he said, his voice rough with the effort of restraint.

Rachel sat up slowly, the dildo sliding free from her pussy with a wet sound that made Marcus's cock twitch. She was glorious in her nakedness—confident, unashamed, every inch a woman who knew what she wanted. "Bad girls need to be punished, don't they?" she asked, crawling to the edge of the bed, her breasts swaying with the movement. "Isn't that what you always tell me?"

"Rachel," Marcus warned, but his feet carried him closer, until he stood at the foot of her bed, his erection pointing toward her like a compass needle finding north. "We can't. Your mother—"

"Is on a cruise," Rachel finished, rising to her knees on the mattress. She was eye-level with his cock now, her breath hot against the sensitive skin. "And I've wanted this since I was eighteen. Since I first saw you step out of the shower with that towel barely hanging on. Since I started touching myself to thoughts of you taking me, claiming me, making me yours in every filthy way."

Her hand replaced his on his shaft, her delicate fingers unable to fully close around his girth. Marcus groaned, his head falling back, his resistance crumbling with each stroke of her soft palm.

"You're my stepfather," he managed, even as his hips thrust involuntarily into her grip. "I raised you. Changed your passwords when you got hacked. Taught you to drive."

"And now you can teach me other things," Rachel whispered, her tongue darting out to taste the bead of pre-cum at his tip. "Teach me how to take this big cock, Daddy. Teach me how to be your perfect little cumslut."

The last of Marcus's control snapped. His hand tangled in her hair—not roughly, but with firm possession—and he pulled her face closer to his groin. "Is this what you want? You want your stepdad's cock in your mouth? You want to know what it's like to be fucked by the man who raised you?"

"Yes," Rachel moaned, her lips parting eagerly. "Please, Daddy. I've practiced so much for this. Let me show you."

She took him into her mouth, and Marcus saw stars. The wet heat of her tongue, the gentle suction, the way she hollowed her cheeks to take more of his length—it was exquisite torture. Rachel was enthusiastic if not experienced, her eagerness making up for any lack of technique. She moaned around his shaft, the vibrations traveling through his entire body, her eyes watering as she tried to take him deeper.

"That's it, baby girl," Marcus groaned, his hips beginning to thrust gently. "Take Daddy's cock. Show me how much you want it."

Rachel pulled back, gasping, strings of saliva connecting her lips to his throbbing erection. "I want it everywhere," she breathed, her hand working his shaft. "I want you to fuck my face, my pussy, my ass. I want to be your dirty little secret, your favorite hole to use whenever Mom's not around."

"Christ, Rachel," Marcus growled, the filthy words spiking his arousal to painful heights. "You're going to be the death of me."

"Then die happy, Daddy," she laughed, before taking him deep again, her nose pressing against his abdomen as she swallowed around his tip.

Marcus couldn't take anymore. He pulled her off his cock, loving the disappointed whimper she made, and pushed her back onto the bed. "Spread your legs," he commanded, his voice leaving no room for disobedience. "Show me that tight college pussy you've been training for me."

Rachel complied instantly, her legs falling open to reveal her glistening sex, pink and swollen and absolutely perfect. The dildo had stretched her slightly, but he knew he'd be bigger, that he'd fill her in ways she'd never experienced.

"Touch yourself," Marcus ordered, stripping off his shirt, then his pants, until he stood completely naked before her. His body was hard and scarred in places, a man's body, experienced and strong. "Show me how you get yourself off thinking about me."

Rachel's fingers found her clit, circling the sensitive bud with practiced ease. "I think about you catching me," she admitted, her hips rolling into her touch. "About you bending me over your knee and spanking me until I'm red and sorry. Then flipping me over and fucking me on your desk while Mom's at work. I think about you coming into my room at night, covering my mouth so I don't scream, and sliding into me from behind while I'm sleeping."

Marcus climbed onto the bed, kneeling between her spread thighs. He knocked her hand away from her pussy, replacing it with his own, his thick fingers probing her entrance. "You're soaked," he observed, pushing two digits inside her tight channel. "Absolutely dripping for your stepdad's cock."

"Always," Rachel gasped, her walls clamping down on his invading fingers. "I've been wet for you for years. Please, Daddy. Please fuck me. I need to feel you inside me."

Marcus positioned himself at her entrance, his cockhead kissing her slick folds. The heat of her radiated against his sensitive skin, promising paradise. "No going back after this," he warned, even as his hips began to press forward. "Once I fuck you, you're mine. My little stepdaughter fucktoy. My secret whore."

"Yes," Rachel cried, her nails digging into his shoulders. "Yes, yes, yes. Make me yours, Daddy. Ruin me for anyone else."

He thrust forward, burying himself to the hilt in one powerful stroke.

The sensation was overwhelming—tight, wet heat gripping him like a velvet vice, Rachel's back arching as she screamed his name, her pussy fluttering around his invading length. Marcus gave her a moment to adjust, feeling her walls stretch to accommodate his girth, feeling her pulse around him with her rapid heartbeat.

"Fuck, you're big," Rachel whimpered, her legs wrapping around his waist, her heels digging into his lower back. "So much bigger than I imagined. Stretch me, Daddy. Split me open."

Marcus began to move, slow strokes at first, letting her feel every inch of his passage. The taboo nature of it—the fact that this was Rachel, his stepdaughter, the girl he'd watched grow into a woman—only heightened the intensity. Each thrust felt like a transgression, like crossing a line that could never be uncrossed, and it was the hottest thing he'd ever experienced.

"Look at you," he grunted, his pace increasing. "Taking my cock like a good girl. Your pussy was made for this. Made for me."

"Only you," Rachel agreed, her hips meeting his thrusts. "Only ever you, Daddy. Fuck me harder. Make it hurt. I want to feel you for days."

Marcus obliged, gripping her hips and pounding into her with abandon. The bed rocked against the wall, the sound of flesh slapping against flesh filling the room, mingling with Rachel's desperate cries and Marcus's guttural groans. He shifted her legs over his shoulders, folding her in half, allowing him to penetrate even deeper, to hit spots that made her eyes roll back and her mouth fall open in silent screams.

"Right there," she gasped, when he found the perfect angle. "Oh god, right there, Daddy. Don't stop. Please don't stop."

"I'm going to cum in you," Marcus warned, feeling his orgasm building at the base of his spine, heavy and inevitable. "Going to fill this tight stepdaughter pussy with my seed. Going to breed you, just like you begged for."

"Yes," Rachel wailed, her own climax approaching. "Cum in me, Daddy. Cum deep in my unprotected pussy. Mark me as yours. I want to feel your hot cum filling me up."

"Touch yourself," Marcus commanded, his thrusts becoming erratic, savage. "Cum with me, baby girl. Cum on Daddy's cock."

Rachel's fingers flew to her clit, rubbing furiously as Marcus hammered into her. Her orgasm hit like a tsunami, her body convulsing, her pussy clamping down on his cock with rhythmic pulses that milked him relentlessly. She screamed his name, then "Daddy," then a stream of incoherent pleading as wave after wave of pleasure crashed through her.

Marcus couldn't hold back any longer. With a roar that seemed to come from his very soul, he buried himself deep and released, his cock pulsing as rope after rope of thick cum flooded her waiting womb. The sensation of filling her, of claiming her so completely, extended his own orgasm, making him spurt again and again until he felt empty and wrung out.

They collapsed together, a tangle of limbs and sweat and racing hearts. Marcus rolled to the side, gathering Rachel against his chest, his cock still twitching inside her, their combined fluids leaking onto the sheets.

"Holy shit," Rachel breathed, her face buried against his neck. "That was... that was everything I fantasized about and more."

Marcus kissed her forehead, then her lips, tasting the salt of sweat and the lingering sweetness of her arousal. "We're in trouble," he murmured, but he was smiling. "Your mother—"

"Doesn't need to know," Rachel finished, her hand tracing patterns on his chest. "This is ours, Daddy. Our secret. Our special thing."

"And when she comes back? When you're back at college?"

Rachel straddled him, her pussy—slick with their combined release—grinding against his already-recovering cock. "Then we get creative," she purred. "Weekend visits. 'Business trips' to your college town. Late night phone calls where I tell you exactly what I'm doing to myself while I think about you."

She leaned down, her breasts pressing against his chest, her lips at his ear. "And next time," she whispered, "I want you to take my ass. I want to feel you everywhere. I want to be completely yours."

Marcus groaned, his cock hardening fully beneath her. "You're going to be the death of me, Rachel."

"Then let's die together," she laughed, rising up to position herself above his erection. "Again and again and again."

She sank down onto him, her slick heat enveloping him once more, and Marcus knew that this—this forbidden, perfect, absolutely wrong connection—was only the beginning. The birthday surprise he never expected had become the obsession he could never escape.

And as Rachel began to ride him, her breasts bouncing, her eyes locked on his with adoration and lust and something dangerously like love, Marcus surrendered completely to the sweetest taboo he'd ever known.