The Family Sex Doll

No sooner had Tina's father rushed out the door than she bolted to Kevin's bedroom. Bursting through the door with her slick, oiled tits bouncing, she shocked Kevin upright on his bed.

"Jesus!" he cried. "You could knock."

Tina jiggled her tits and asked, "Why? Were you jerking off?"

"Thought about it," Kevin replied, staring at her jugs.

"You'll be glad you didn't."

The sight of her in a pair of panties with greased-up knockers had Kevin nodding in agreement. "I already am."

Tina lay on the bed next to her brother.

"Pull it out," she said, her chest heaving with excitement. "Pull it out and push your cock between my tits."

Kevin wiggled out of his shorts and tossed off his shirt, saying, "Dad?"

"He was in a very sudden hurry," Tina said, mashing her melons together provocatively as her brother straddled her chest.

"Jesus, I can't get over how perfect they are," he said, tugging one of her nipples.

Tina moaned, looking up at him as he held his hard dick in one hand.

"Kevin, get your phone," she said.

"Really?"

"Do it. I want to see what it looks like. I want to watch your cock slide between them."

Kevin leaned over and picked up his phone, switching on the camera and pointing it down at his sister. Tina squeezed her tits together.

"They're all slick from the ointment," she said.

Kevin pushed his dick between her mounds, groaning as they swallowed the whole of his shaft. The slick goo coated his cock as he slowly stroked his meat back and forth between them.

"My God," he whispered. "It's amazing."

Tina's flush deepened as she groped her tits and squeezed them around her brother's prick. "I can't stop looking at them," she whispered. "I can't even believe it's me. I look like one of those silicone sex dolls guys buy to jerk off into."

Kevin's dick jerked between her tits. "Fuck," he whispered.

"Was that too dirty?" she asked with a grin. "I kind of feel like one, too. My brother's big-titty sex doll."

Kevin's phone shook in his hand as he bit his lip.

"Ever since I woke up with these babies, I can't stop thinking about it," Tina said to the camera. "Guys fucking my tits, playing with them, sucking on them, coating them with loads of cum."

"Fuck," Kevin whispered again.

"They don't fuck me," she went on. "Just my tits and my mouth. I imagine lines of guys pushing my mouth down their cocks until they blow big loads all over my tits."

"Jesus!"

"Kevin, it feels so good! Keep stroking your cock with them. It's gonna make me cum!"

Kevin increased the pace of his strokes, the warm, slick flesh of his sister's big tits creating a pleasant friction. Coupled with the sight of her massive jugs squeezing his erection and the filthith  pouring from her mouth, he didn't think this first nut was going to take long.

"Dad got a hard-on from it," she said. "I came from him squeezing my tits and his dick got so hard."

"Oh, fuck," Kevin muttered.

"Kevin, I think I'm becoming a slut. It's all I can think about. I want everyone to look at my tits, play with them, fuck them, and cum on them."

Kevin groaned and his dick lurched.

"I want Dad to fuck my tits. I want you and Dad to take turns fucking my tits and cumming on them. I want to suck your cocks and let you both cum on my tits."

"Oh, my God!" Kevin said and stroked his dick between them faster.

"You could invite your friends over to play with your sister's big tits. You'd be so popular! They could all line up to get sucked off and blow their loads on my huge tits!"

"Fuck," Kevin cried as he stroked his cock into her valley.

Tina flinched in surprise as the head of his dick popped out of her tits and a shot of cock cream plastered her face.

"Oh!" she cried and another hot spray landed across her lips and mouth as she came, bucking under her brother.

"Fuck! Oh, God!"

Kevin held a death grip on the phone, capturing each shot of cum across his sister's face, the squirts across her neck, and the final blast across her tits. He recorded her orgasmic expression, her face coated in his jizz and ropes of it dangling from her lips. He slid forward, pushing the throbbing head of his dick between Tina's lips, where she suckled on it and moaned.

Her eyes opened, looking up at the camera, her mouth stuffed with his hard-on. Kevin had never seen a more erotic sight. The angle, awkward as it was, was incredibly sexy. He could only manage to get the head of his dick into her mouth, but it was enough to provide an intense post-nut sensation that was almost painful.

The excellent orgasm on his sister's face hadn't reduced his hard-on. He quickly slid it from her mouth and scrambled between her legs, pushing them apart and sliding his sensitive prick into Tina's warm depths.

"Oh, fuck! Kevin! Oh, fuck! Push it in!"

He held her legs apart and jammed his length into her. His sister's pussy was practically creaming already, clenching around his cock as he grunted and thrust. Tina's body convulsed again within only a few strokes, and she mashed her tits together as a second wave of pleasure wracked her body.

"Ah, fuck! Fuck me!" she cried.

With no one to hear her, Kevin had no need to silence her cries. Instead, he drove his cock into her as if she were his sex doll. Long strokes into her quivering cunt and her impassioned cries created a sexy cocktail that had his prick harder than he could remember.

"Oh, Kevin! Fuck your slut! Fuck your slut!" Tina cried, gripping her legs and holding them open for him to plow her deeper.

His little sister's pussy was the wettest he'd ever felt. It seemed impossible that a girl's pussy could get this excited and hot for him. With the edge off and his nut out of the way, he felt like a God as he stroked his meat into her.

Soon, sweat beaded on his skin. Tina's huge tits heaved and wobbled hypnotically with each thrust. Kevin couldn't take his eyes off them. And over those perfect, bouncing mounds, his sister's face looked back at him worshipfully, coated in his drying semen. Her mouth hung open in bliss as his cock pleasured her, her eyes wide with disbelief that anything could feel this good.

It was a feeling he shared. No pussy felt this good. It was like Tina's insides pulsed and sucked at his cock, as if her entire purpose was to pleasure his dick.

"Oh, fuck! Again!" Tina cried and her back arched. Her head tossed and she gripped her tits in her hands as she humped her cunt against him.

Biology was against Kevin, though. His dick called a timeout and as Tina humped against him, it slid out of her inviting cunt and slapped wetly against it. Her slick mound ground against his softening prick as she mewled needily for more.

Slowly, Tina stopped grinding her cunt against him and lay staring up at the ceiling. Kevin toppled to his side, breathing deeply and wiping sweat from his face. Minutes passed as the siblings listened to each other breathe.

"Holy shit," Tina finally whispered.

"Holy shit," Kevin agreed.

Tina rolled onto her side and put a sweaty hand on his equally sweaty chest. "How long do you need to go again? Kevin, that was the hottest fucking thing ever."

Kevin looked down at his prick and willed it to stand to attention. It ignored him.

"I don't really have a say," he said. "But I don't think it will be long."

Tina fished his phone from behind her back. "I think you dropped it."

"Damn. I guess that last part's gonna be audio-only."

"Guess you need a tripod because I'm going to want to do that a lot," Tina said, running her finger down his chest.

She moved in to kiss him, stopped, and laughed.

"Oops," she said and wiped her hand across her mouth. "Guess I should wash that off first, huh?"

"I'd prefer it," Kevin said.

"Maybe we could wash it together?"

"It's an idea," Kevin agreed.

As it turns out, a hot shower with one's nude and slutty sister drastically improves the rate of hard-on recovery.

***

Kevin rigged a multi-angle experience, propping his phone on his desk and Tina's on the nightstand. This provided excellent coverage for the first time his sister rode his cock. It was hard to decide which view he preferred; Tina's huge tits bouncing above him, or they're jiggling as he thrust into her. In the end, as he filled his sister's pussy for the second time, he decided they were equally hot.

Kevin helped Tina with her next check-in after a much-needed lunch and a nap. Today's instructions were related to the sensitivity of Tina's implants.

"Providing only stimulation to the breasts, determine how many orgasms the patient can reach in thirty minutes."

Within the space of half an hour, Tina came six times. Kevin used different methods. Her first orgasm came purely from having her tits groped and squeezed. As Kevin did this, Tina whispered her affirmations, with the camera recording for her patient portal, and watching her brother squeeze her tits in the mirror.

The second time, Kevin concentrated his efforts on her nipples, pinching and pulling on them until Tina came again. She was like an orgasm machine, moaning and jerking. How one person could manage to cum so much and still want more, Kevin didn't understand.

Her third cum came from her brother licking her nipples. The fourth and fifth came back to back, with Kevin rubbing her jugs with moisturizing cream. Finally, Kevin put Tina on her knees and had her masturbate his cock with her tits until she orgasmed a final time.

Of course, it seemed a waste of good lube to simply wash it off and call off a good jerk-off session. Therefore, Kevin put Tina on her back and fucked her cream-covered tits once more, cumming on them as she quietly encouraged him.

"Cum on my tits. Coat your sister's big tits. Fuck my tits and cover them, Kevin. Stroke your cock with your little sister's big tits. I need more cum on my tits. Cover your sex doll's huge tits…"

Kevin's satisfied cock finally refused to participate after this latest coating of his sister's jugs. It did not, however, mean that Kevin was ready to stop playing with his sex doll sister's tits. While they lay together on the couch, he idly squeezed and fondled Tina's immense melons until late afternoon.

Brian had a hard day. His guilty hard-on persisted throughout the morning, fueled by the memory of his daughter's big, soft, pliable melons under his hands. It wasn't right. A dutiful and loving father, who had been nothing but supportive, shouldn't be placed in this position.

He had a wife, who he loved, and his wife had an excellent set of tits, which Brian also loved. A man with those things should not be constantly presented with a second set of incredible breasts, invited to play with them, and encouraged to look and feel them. This was especially true when those gorgeous breasts were attached to one's daughter.

Thus, Brian walked into his home feeling as if he were the only sane person left. That touchy-feely liberal doctor with her quirky ideas was to blame. His own wife's indifference toward having her husband and son engage in this madness was bothersome. He'd expressed those feelings the prior evening in bed with Laura.

"It just isn't right," he'd said. "Groping our daughter's boobs isn't acceptance."

Laura, as she undressed and presented him with her magnificent melons, disagreed. "That's just your old-school attitude talking. Doctor Donna's an educated woman. She does this every day. Do you want Tina to develop some kind of a complex just because you get uncomfortable about a pair of boobs?"

"What about my complex?" Brian argued.

Laura crawled over him and pressed her tits into his hands.

"What's this?" she asked as she ground her cunt against his hard-on. "Getting excited over the thought of two big pairs of boobies bouncing around this place?"

Brian sighed and said, "You know I'm not. It's you sticking my hands on your tits."

"Brian, man up. Tina's excited about her new boobs. She wants to show them off a little bit and have some fun with them. My advice is to go with it. No one thinks you're molesting her. Not me. Not her. Not the doctor. You're basically getting a free pass to play with some big titties."

"But—"

"Besides, if this is what happens when you think about Tina's huge tits," and she slid her cunt along his hard-on again, "then I'm not complaining."

Brian's cock jerked, trapped by the slick wet lips of his wife's pussy.

"It's not because of Tina's tits—breasts," Brian whined.

Laura slid off his lap and lay on her back, squishing her melons together invitingly.

"No? Why don't you push that pole between these ones, Daddy."

"Don't do that," Brian grumbled.

"But you like it," Laura said with a smirk.

"Well, not tonight I don't."

"Bullshit. Come up here and fuck my tits, Daddy."

Brian sighed, reached into the nightstand and withdrew a bottle of lube. He straddled his wife's chest and stroked a handful of the stuff into his hard shaft.

"That's it," Laura said. "Just push that dick between my tits."

Brian smeared his lubed-covered hands between his wife's breasts. She pushed them back together and pouted. He slid his prick between them, groaning with pleasure as her slick jugs stimulated his length.

"I know they aren't as big as Tina's," Laura said, "but you still like fucking my tits, don't you, Daddy?"

"Yeah," Brian mumbled.

"Tell me," Laura said. "Tell me you love fucking my tits."

Brian groped his wife's tits and said, "I love fucking your tits."

"And I love your big cock between them, Daddy. Use my tits to get yourself off. You know what I want."

Brian pumped his prick between her jugs and said, "Yeah."

"Cum on my tits," Laura whispered. "Cum all over my tits, Daddy."

It wasn't fair. Everywhere he turned, Brian was confronted with big tits, and Laura's dirty talk only made things worse. It took him only minutes to spatter her melons in spunk.

Life continued to play hardball with Brian from the moment he walked into the house after work that next day. While Laura was not yet home, Keven and Tina were. He found them together in the living room, watching TV.

Even knowing that Kevin was going to be helping his sister smear the ointment into her breasts, Brian was not prepared for it. He'd done it himself that morning, and he was still not prepared for it.

His reaction was an understandable one, a reaction borne out of his years raising children. When confronted with the sight of one's son, groping and squeezing one's daughter's tits, one was supposed to react with shock and disapproval. This is what Brian did. Initially.

"Kevin!" he shouted as he entered the living room.

Kevin peered out from behind his sister. Tina sat on her brother's lap, wearing nothing but a pair of small white panties. Her legs were spread to either side of her brother's, and Kevin's hands were on her shiny, slick tits.

"Hey, Dad," Kevin said.

It was such a nonchalant response. It was one which indicated that Kevin saw nothing abnormal about squeezing and groping his sister's giant jugs. It was, however, Brian who blushed out of further guilt.

"Hi, Dad," Tina said, but her tone was one of breathless excitement.

Brian knew why. Tina was on the verge of having an orgasm thanks to her brother's helpful ministrations. She had likely already had more than one, judging by the deep crimson flush of her skin.

"I—You're… doing a nice job," Brian said. "Um, how long have you been… helping your sister?"

Kevin continued to maul and squeeze Tina's tits as he shrugged and answered, "I don't know. A while."

"Oh, God," Tina squeaked suddenly. "Oh, Kevin! Don't stop! It's… again!"

And as Brian watched, his guilty hard-on at full mast, Tina ground her cunt against her brother's crotch and experienced an explosive orgasm. All Brian could do was stand by and watch it happen, observing the ecstacy on his daughter's face as his son tugged on her hard nipples. Life was not fair. A dutiful and loving father should not be presented with such a display of intense and taboo eroticism.

Tina squirmed and writhed on Kevin's lap for nearly a minute as her brother manhandled her jugs. At last, her gyrations slowed, stopped, and she took a deep breath.

"Good?" Kevin asked.

"Uh huh," she mumbled as she staggered to her feet. "Oh, man. How many was that? Like five?"

"Five?" Brian squeaked.

"Six," Kevin corrected.

"Six?" Brian asked, choking on his tongue.

His children finally remembered he was standing in the doorway.

"Oh, hey, Dad," Kevin said again.

"Hi, Dad," Tina echoed. "Good day at work?"

"Hard," Brian said. "Tough! It was tough. A tough day."

Tina sauntered over and made it a harder day by hugging her father and pressing her gooey melons into his chest.

"Uh," Brian said.

Tina pulled back and said, "Oh, shit! I'm sorry. Your shirt! Oh, shit!"

On Brian's white, button-down shirt, there was now a large greasy stain in the shape of Tina's tits.

"Oh, my gosh," she said. "I didn't think."

She began unbuttoning the shirt as Brian stood paralyzed, his dick tenting his trousers.

"Let me go put it in the wash," Tina said and undid two more buttons.

Brian finally gained his wits and grasped her wrists.

"It's okay," he said. "I… I got it."

"Dad, I'm so sorry," Tina whined.

"It's just a shirt," he said to her tits. "Speaking of which, maybe you should put one on?"

Tina looked hurt. Brian corrected, "I mean, if you want to. Of course, you don't have to. We're all happy to… look at your breasts."

"Aw! Thanks, Dad!" Tina cooed and hugged him again. "You can feel them, too. If you want. I don't mind. It feels really good. I want you guys to enjoy them."

Brian quickly extricated himself and said, "I'm going to go put this in the wash."

It wasn't fair. A loving and dutiful father should not be presented with an invitation to feel and enjoy such a wonderful pair of big tits. Especially when it was his daughter's tits. It was simply unfair.