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View Full Version : Slave for a day - brother and sister plus the dog



Jonny81
04-24-2016, 02:03 PM
Wanting opinions and maybe help editing, this isn't the final draft and I plan on adding more to it.



Me and my sister, Kasey, have always been close. We were just two years apart, almost to the day. Our birthdays are just five days apart and I honestly have no idea how our Mom planned that one out. We’ve always celebrated together in the middle, September 15th.

I was turning 16 this year and her 18 so it was pretty exciting for both of us. It was even better because the 15th fell on a Saturday and we had the entire day to celebrate.

Not wanting to miss a single minute of it I had set my alarm for, 7.30 am, and gotten up early to shower and dress; but as I woke I realized that my dog, Boss, was not in my room as he usually is when I woke. I had to let him out anyway so I went hunting for him.

Kasey’s room was right across the hall and as I stepped through my door I heard a soft moan coming from her room and noticed the door was cracked just a little. Like any 16 year old male I put my eye to the door to see what she was doing.

She was on the bed on her knees with her 5 foot 3 inches and 110 pounds curled with her shoulder length brown hair hanging over her face and her deliciously perfect bubble butt up in the air with her legs spread open and Boss riding her ass from behind as she fingered her cream colored pussy lips.

I pushed the door open just a nudge for a better view. I couldn’t stop myself from watching as the large blue pit bull fucked her, or from reaching into my shorts and stroking my morning hardon. I wished I had grabbed my phone but I'd come out in just my boxers. I came about the same time as she did from the sound she made as Boss knotted inside her asshole. I backed away before she realized I was there and went into the bathroom, deciding to let them have a few minutes to cool off before I took the dog out.

I was putting my dirty laundry in the washing machine when she came over to me wearing an old Tshirt that barely reached her navel and a pair of Hello Kitty panties carrying a basket of her clothes.

“Hey baby brother, you don’t mind doing mine to do you?” she rubbed against me as she set the basket on top of the dryer.

“What do I get for it?” I moved my eyes towards her.

I know she's my sister but, but damn she was hot. I towered over her at 5”7 and 160 lbs but people still think we’re twins half the time.

“What do you want?”

Now that was a loaded question with a hundred different answers, none of them very brotherly.

“It’s our birthday,” I reminded her.

“I know, why do you think I got up at 6:30 on a Saturday morning?”

“I want you to be my slave for the day.” I grinned.

“A slave for the day huh? I can handle that,” she nodded.

“Then you best go cook our breakfast,” I added her clothes to mine and started the wash.

I followed her into the kitchen and watched as she danced around pulling things from the fridge, lighting the gas stove top, pulling the skillet down from above the stove… After she jumped and missed the third time I slid in behind her and lifted her by the waist so she could pull the fry pan down.

“Why did I have to be the short one,” she laughed.

She started the bacon before cracking the eggs and mixed them up with milk and shredded cheese in a bowl before putting bread in the toaster. Then she started a pot of coffee and danced back to the fridge to pour two glasses of orange juice.

“Why the Hello Kitties? I thought only preteens wore that stuff.”

“And women who can’t fit the big girl panties,” she laughed.

“Come on, I’ve seen you in a thong Kasey, hell I just put three in the wash,” I laughed with her.

“Exactly, the only three that I own, in fact these are the only panties I have that still fit my fat ass,” she slapped her butt.

“Your ass is not fat,” I told her.

“Been looking at my butt baby brother?” she teased.

“Only when you walk around the house naked,” I shrugged.

“Want me to go put on pants?”

“No,” I said a little too quickly.

She smiled and shook her Hello Kitties for me as she flipped the bacon.

I heard Boss scratching at the back door, no doubt smelling the food, and let him in. His head turned towards Kasey but I slapped my thigh and he sat down beside me at the counter island.

“Good boy,” I scratched his ears as I followed his eyes to Kasey’s rear.

The toast popped up and she danced over to pull it out before putting more in. She got the jelly from the fridge and dug in the drawer for a butter knife before spreading a thick layer of strawberry jam over each slice.

She pulled the bacon from the fry pan and poured in the eggs with a splash. Boss jumped up but I slapped my leg and he sat back down. I got up and walked to her, slid my tongue across her cheek and licked the raw egg.

“Eww,” she said but I could see it had turned her on.

“Needs a bit of salt and pepper,” I grinned and reached over her to the spice rack.

“Mom should put this stuff where everyone can reach it,” she said and rubbed her butt against me.

I wasn’t about to tell her that Mom had a step stool under the sink she uses.

She stirred the eggs with a wooden spoon until they were a nice golden color before scraping them out onto a large platter.

“No need to waste more dishes, just bring everything over like it is and we’ll share.” I told her.

“I suppose I’m washing the dishes too?” she asked.

“I thought I might help,” I shrugged.

The second round of toast popped up and she smeared jam over it before sitting down beside me.

We didn’t talk until we had stuffed ourselves and given the leftovers to Boss. He was more than happy to give the dishes a pre wash before we carried them to the sink. I dumped the bacon grease into a tin can while the water heated up, then went to pull the clothes from the wash and put them in the dryer.

When I got back she was already elbows deep in the dish water with her shirt wet. I started rinsing and tried to keep my eyes off of her peekaboo breasts.

“So, what's after the dishes, Master?” she asked.

“I haven’t cleaned my room in a while,” I teased.

“Starting to think I should have had you do more than my laundry,” she laughed.

“Like what, wash your car?”

“Yeah, that would have been good,” she grinned.

“We can do that, after we finish with my room,” I shrugged.

“You better fold and put away my clothes too then,” she giggled.

“Why not,” I said.

After we finished the dishes, cleaned off the counter, and put everything away we headed into my bedroom. I’m like any other teenage male and my room is proof of it. Being a geek does not make one a clean freak, in fact it's pretty much the opposite.

“Gross, you want me to clean this?”

Her voice betrayed her because I could tell she wasn’t really disgusted. Not sure what it was but it wasn’t disgust in her voice as she started collecting used Kleenexes off the floor around my computer desk. I opened up a garbage bag and dumped the tiny little pail into it before handing it to her to fill up.

“Damn, how many times a day do you jerk off?” she laughed.

“Depends on who is home, sometimes 4 or 5, sometimes 10 or 20,” I shrugged.

“So when you're hiding in here after school…”

“Pretty much, that or I’m reading sex stories on the net,” I admitted.

“What kind of stories?” she climbed underneath the desk.

I went to the computer and wiggled the mouse before typing in my password. The last story I wrote popped onto the screen.

“Like this one,” I stepped back so she could climb back out from under the desk and look.

“My sister the slave,” she giggled and started reading as she scrolled the page.

“Oh wow, that’s hot,” she said deep into the short story.

“You don’t think it's disgusting?”

“Why would I think that? You’re the only guy I know who thinks I’m hot who doesn’t treat me like a skank.” she gave me a sexy smile before going back to the story.

“Can I look at your favorites? I want to read more,” she slipped into my desk chair and clicked on the favorites folder before I even responded.

“Sure, go ahead, I’ll just do your chores while you jerk off,” I used her own line against her.

“Thanks babe, I’ll be done in a minute,” she used my favorite comeback.

“Mom submits, sister cums over, Mom and the dog...wow,” she giggled and started reading.

“Who is this MrHappyJohnson?” she asked.

“You really don’t want me to answer that.”

“Matt…”

“I have a vivid imagination alright? I wrote them,” I grumbled.

“They’re fucking hot bro, why have you been holding out?”

“Because it’s embarrassing, and I thought you would get mad,” I fell onto the bed.

“Mad? Because my younger brother is a horny little devil with a wicked tongue who writes his fantasies for everyone but me to read and apparently thinks I'm sexy? Hell yeah I’m mad, but not because of what you wrote.” she went back to reading again.

“Are you sure you’re still a virgin?” she asked a minute later.

“Yeah, unfortunately,” I groaned.

“Ok, I have to stop reading these now, but I will finish later. Let’s get back to cleaning,” she hopped from the chair and I noticed Hello Kitty had a wet nose.

We finished picking up my trash and she crawled under the bed, her little ass wiggling along the floor as she dragged everything out. I waited to see what she’d say about my little box.

“What’s in here?” she asked opening the top of the shoe box.

“Pictures,” I shrugged.

“No crap, wow these are really good but if I’d known maybe I could have modeled a little better,” she giggled.

“And you have some of Mom, and is this one… Kira? Our little cousin Kira?” she waved the picture of our blonde haired 14 year old cousin around.

“From that night she slept over, I walked in when she was in the shower,” I shrugged.

“And you just happened to have a camera on you at the time?” she laughed.

“My phone actually, I used the auto printer at Wall-mart.”

“So that’s what you needed money for,” she grinned.

“So, my little brother is an amateur smut writer, a photographer, and a pornographer? I’m impressed and a little jealous.” she laughed.

“If I asked, would you model for me?” I asked her.

“I’m your slave for the day remember? I’d do anything you told me to do, but yeah I’d model for you anytime you wanted,” she grinned.

I nodded and filed that away for later as we went back to cleaning.

As she dug out the vacuum cleaner I went to check on our clothes and take my sheets to the wash. They were dry so I pulled them out and used her basket to take them into the bedroom and dumped them on my bed so I could fold as she vacuumed.

I set aside what I wanted her to wear to wash her car in, a sexy little G string bikini. The rest of her clothes I carried into her bedroom where I found Boss sleeping in her bed.

“A little ass and you turn traitor huh?” I chuckled and pulled out her underwear drawer.

After putting away her clothes I went to put mine up and found Kasey back behind my desk reading another story with a hand down her Hello Kitties.

“Take them off, I want to watch,” I laid across my bed and pulled down my shorts.

She turned the chair at an angle and slid her panties off. Her eyes went to my hand gripping my dick and she licked her lips. I watched as she added a second finger to her cream colored pussy and her palm pressed against her clit. I stroked my shaft up and down as her fingers pumped in and out.

“Take off your shirt and pinch your nipples,” I told her and she quickly obeyed with a sexy moan.

I whistled and a few seconds later Boss came prancing into the room. I snapped my fingers and pointed and he gave me a smug look before going over to Kasey and licking her. She moaned and guided his tongue down to her pussy and pulled her hand away to play with her small breasts as he licked her. I stroked harder.

I came first, shooting up towards the ceiling and down onto my stomach. A second later I saw her body shake as her own orgasm broke free.

“I made a mess, come lick it up,” I grinned and snapped my fingers for Boss to stop.

A few seconds later her velvety tongue slid across my belly and played in my navel before moving down. She licked every drop of cum from me before taking my dick into her mouth to clean it off too. I groaned and slid my hands to her hair as she sucked and licked.

I grew hard again and she looked up at me.

“Keep sucking it,” I told her and she moaned as her head started bobbing up and down the 6.8 inch shaft.

My hands wandered down her naked body until I reached her pussy and slipped my fingers into her. She moaned around my cock again as I squeezed and pumped. She was soaking wet and made a sexy slurping sound as my fingers slid in and out of her.

“Do you have condoms?” I asked and she groaned as her head shook no.

“Damn, I guess we’ll have to finish each other with our mouths then, climb up so I can taste you.”

She nodded yes and swung her pussy over my waiting mouth. With the first taste I knew why Boss always had honey scented breath. I pressed my mouth to her and licked like crazy as if she were coated in candy. This time we came together as she hummed around my cock and I fucked her with my tongue.

She swallowed and kept sucking and bobbing until I slapped her ass and said, “Ok babe, time to get dressed so we can go get wet.”

She put on the bikini while I pulled on my swim trunks before we went into the back yard.

I turned on the hose while she made a bucket of soapy water. I gave the blue Nissan a pre rinse before spraying her and turning the hose off again and taking one of the sponges. We started from opposite ends and met in the middle an hour later for a sponge fight.

After getting each other all soapy and slick we started wrestling around in the grass as I tickled her and she tried to break free. I pinned her down on her stomach with her legs spread and her butt in the air. She wiggled her butt against my hardon and moaned.

“You keep that up and we’re going to need a condom,” I groaned.

“I’m on the pill,” she whispered.

“Why didn’t you say that earlier?” I tickled her again.

“I wanted to see what you would do,” she said.

I pulled the string on her bottoms and slid them out as I pulled down my shorts.

“I want to fuck you,” I said rubbing my soapy cock up and down her ass cheeks.

“I want you to,” she bucked against me.

That was all I needed and let the head of my dick slip into her virgin pussy. She was so fucking tight that I hard to push hard while pulling her against me. She groaned as I stretched her but thankfully she had already broken her hymen. I slid all the way in before holding her against me.

“Fuck, your tight.”

“And your big,” she moaned.

I let her have a few seconds before I pulled back and thrust into her again. She rolled her ass and I pumped my hips.

“Mmmm, why didn’t we do this sooner?” she moaned and bucked against me.

“Mom and Dad would flip,” I chuckled.

“Not Mom,” she giggled.

Neither of us lasted very long. It was just a few short minutes before my dick erupted inside of her and she started milking me. I pumped everything I had into her before flipping her over and kissing her mouth. She wrapped her arms and legs around me and my semi hard dick found its way back into her.

“I’ve wanted to fuck you for so long,” I pumped into her as my cock hardened again.

“Me too, I just wasn’t sure if you felt the same,” she confessed and kissed me again.

“I want to do it again, not just today,” I gave her a hard thrust.

“Yes, god yes Matt, I want to be your slave sister and fuck all the time,” she shouted as I went deep.

“Like in the story?” I asked pulling myself out until just the head was left in her.

“Yes, that made me so fucking horny, I want that, exactly that,” she said pulling me deep again.

“A slave for my birthday, the best gift ever!” I shouted and pounded into her until we came a second time.

“What do we do next, Master?” she whispered against my ear.

“Rinse the soap off, then you can fix us sandwiches for lunch.” I lifted off of her and fixed my shorts.

“Naked lunch?”

“You don’t dress unless I give you clothes to wear,” I grinned.

“Mmmm, yes Master,” she giggled as I went for the water hose.

Jonny81
04-24-2016, 04:19 PM
Bleh really wish we could edit our own posts, 30 minutes is not long enough :/

Jonny81
04-24-2016, 07:27 PM
More of this is posted here (http://www.sexstoriespost.com/forums/bestiality/49528-birthday-slave-brother-sister-cousin-dog.html) but its still a work in progress.

davesmistress
04-24-2016, 07:46 PM
Bleh really wish we could edit our own posts, 30 minutes is not long enough :/


I know everyone hates it, but its the owners rules....a good thing you can do is when you are writing in the post box, or even copy/paste in the box...before you hit submit there is a preview option, you can use that over and over for quite some time, and then submit the post...it can help with layout and help with the editing....

Now if its just a few small things, let us know and we can always change it for you.