Behind the Garden Shed

Behind the Garden Shed

Brother Sister

The Sexual Favour Book 1

Matt Coolomon

Edited by S.H. Madonna

Adults Only

High level erotic content

Copyright © 2024 Matt Coolomon

All rights reserved. No part of this eBook may be reproduced, stored in a retrieval system or transmitted, in any form, without the written consent of the copyright holder. This is a work of fiction. Any resemblance to any real-life person is coincidental.

This taboo version of 'The Sexual Favour' is a pseudo incest story about hot wife Julia and her foster brother, cousin and uncle.

Chapter 1: Hands-on Education

I woke alone in bed to the sound of dance music coming from the spare room accompanied by the sound of my wife pounding her treadmill. I pulled my pillow around my ears and shut my eyes tight. I squinted one open again and checked that it was only 7.48am. The plan for the day was to set off on our three-week lakeside vacation but the first leg of the drive was only two hours to Julia's parents' place, where we needed to be in time for lunch.

"Come on, you!" Julia called gaily from the bedroom doorway.

I checked the time again after a little while dozing. It was almost 8.30. I flung the doona back and lay for another few minutes smiling to myself and reliving the way Julia had attacked me last night. After sucking me hard, something she rarely does, she had straddled me against the bedhead and used my dick to get herself off, squishing and grinding on it while I ejaculated in her twice. She often takes control but has never been quite that way in the past, never so wild and demanding.

"Come on!" she scolded, striding into the room rubbing her hair dry with a towel.

"All right, I'm coming!" I tossed back and smacked her bottom on the way past, making her glare and squeal playfully. "Ten minutes, okay?"

A quick bowl of cereal and pulling on jeans and a t-shirt was all that was required. I did that and tossed the two suitcases in the back of our sports convertible. Then it was a 20-minute battle to get through Saturday city morning traffic to the highway headed west over the mountains, then north beyond that.

Julia spent the first hour chatting with four different girlfriends from school, organizing their party night reunion. The stopover to visit her parents was her old hometown where she still knows everyone. I wasn't involved in their girl-group plans and wouldn't want to be. I usually play chess with Julia's father when we stay over.

"Are you okay, Rod?" Julia asked with a yawn. It seemed the calls were complete. We were an hour and a half in and heading north. I nodded and smiled, patting and squeezing my wife's knee.

"So are you looking forward to seeing your little brother again?" I asked and made her smile and roll her eyes.

"Are you going to flash him again?" I pressed playfully.

"I don't know, maybe... I might go topless for sunbathing by the pool. Mum's fine with me doing it and Dad certainly doesn't mind."

"Right." I nodded. "Does your dad stare much when you do it?"

"Um yes. He seems to watch for me sunbathing now... I don't mind him looking though, or my brother."

"I think it's great baby. A sister should help out a little brother when it comes to learning about sex. I think you giving him a handjob that time was nice of you."

I hadn't included any brother-sister play in the stories I put together for our sexy fun. It had only happened the once that Julia touched her brother's dick and he lost it almost immediately.

She reclined her seat and closed her eyes without further comment, since she doesn't like talking about it too much. I drove on, watching her pretty face as she slept and thinking about the erotic story that had gotten her so hot last night, which was one I had written for her.

Actually I'd adapted it from one I'd read online. I often do that -- come across a story I think Julia will enjoy playing a role in and search and replace the leading lady's name with 'Julia'.

I'd gotten a bit more daring than usual last night. Pushed the boundary along a bit and had her flashing braless down her top as she shared a back-seat cab ride home from a club with some random stranger. The guy hitting on her getting his hand up her skirt before her destination was reached and she scrambled from the cab to run inside to the safety of her waiting husband. Me.

I wasn't sure where I was up to with these fantasies myself. The line between that and really wanting something to happen was getting blurry.

I mulled that over while Julia slept through the rest of our drive. I had a few other stories saved and a couple I'd tried writing myself but hadn't been game to finish yet. I was planning to push the boundary even further next time.

*

"Rodney! Hello there, son, how have you been?" Julia's father was a huge man, his voice boomed.

I shook his hand, getting my own crushed. "Fine thank you, sir. It's great to see you, James." I got a hug from my mother in-law. "Hi, Loretta. You're blond!"

Loretta fluffed her new hairdo, showing it off. "What do you think, takes 10 years off, right?"

"At least 10," I agreed.

Julia rolled her eyes. "Looks great, mum." She pushed my shoulder, giggling. "Suck!"

Lunch was a huge spread out on a deck overlooking the forest. Two beers had my head light and my concentration floating around. I took the third one James had placed in front of me and followed Loretta into the living room where there was a massive, brand new TV ready for me to hook up for them. It had been delivered that morning, timed for our visit.

Julia walked through the room grinning at me. "What a suck!" she teased.

I tossed a ball of plastic packaging at her. She batted it away and glared her mock indignation. Her little brother Will came from the kitchen and she grabbed and cuddled him, mussing his thick mop of hair and kissing his face as he tried to squirm away from her.

"Yuck!" he cried and had to lunge to get clear before she grabbed him again.

Will was 19 and all skin and bones. He made me feel half normal stripped down, having a dip together in the pool after setting up the TV. He was even thinner than me.

We had our usual diving and bombing contest from the springboard. Julia came out to sunbathe.

She had on a tank top over her bikini but lifted that off and made her little brother's eyes widen.

I saw her glance at him and notice. She smiled to herself and remained facing him while applying sunscreen to her arms and legs.

"Come and do my back Will?"

Will climbed out of the pool and went to her immediately. She turned so he could sit behind her and she grimaced guiltily at me.

I held her eyes and did a little nod.

Her brother was rubbing the sunscreen over her shoulders. She lifted her hair and held it aside. He did the top of her back, above her bikini string tied there. He was carefully rubbing above and below.

She reached back and pulled the string. "Underneath it too please," she asked. "I don't want a tan line from the string."

He squeezed more sunscreen and rubbed into her bare back now with both hands like he'd done this before.

Julia reached up and pulled the string behind her neck too, catching her bikini top with an arm across her front.

"Mmm that's nice Will. Do a little massage too please?"

I started to get a hard-on. Julia had often mentioned teasing her brother with the way he tries to perv on her.

He was rubbing up and down and his fingers were running up her sides.

"Have you got a girlfriend yet?" she asked him.

He shook his head. "Not yet."

"Okay," she said and took her bikini top away. "Would you like to do my front too?"

She glared defiantly over at me. I gulped and nodded.

She laid back with her arms by her sides and her tits bare. Her little brother squeezed more sunscreen and rubbed it into one of her tits.

"And massage too?" he checked with her.

She took a breath. "Uh huh a little bit. Not too firmly."

"I know," the young guy said and gently massaged that globe and played with the nipple.

He squeezed more sunscreen and applied it to his sister's other tit.

Julia's upper body lifted a little. "Mmm not too much with my nipples Will. That's um..." She swallowed. "That feels a bit too nice," she said and bit down on her lip.

He moved back to the other tit and squeezed it again, massaging and defying his sister by playing with her nipples some more.

She kept thrusting upward for him. He used his other hand as well and massaged both tits for a minute then isolated her nipples. Her breathing was becoming ragged, her eyes glazing over and her mouth was open.

I approached remaining waist deep in the water and hiding my boner. I could see Will's boner tenting his swimmers.

Julia's eyes rolled to it as well. She giggled and squeezed it. "What's this then?"

Her brother laughed and jumped back out of her reach but was still feeling a tit.

She pried his hand from her, laughing too. She then kept hold of his wrist and lunged and grabbed his dick again. She got a good hold of it and he squawked but had to keep still.

"Show me!" she demanded. "Let me see!"

"Aw Jules!" the guy whined.

She scooted close. He was standing and glaring worriedly down at her.

She carefully stretched the waist band of his swim shorts over the bulge and freed a bolt upright erection. It was again a relief to me, as his was no bigger than mine.

Julia squeezed it bare and smiled up at him. She raised her brows at me. I gulped hard and nodded again.

Her brother had stopped struggling and just glared down at her.

She smiled up at him and stroked up and down his shaft.

"Why don't you have a girlfriend yet? Have you even asked a girl out?"

The guy nodded and swallowed hard. He glanced furtively in my direction but couldn't keep his eyes off what his sister was doing.

"Do you want to come around the side before Dad sees?" she asked him.

He nodded urgently.

She let go of his dick and took his wrist and led him behind a garden shed.

She pushed him back against the shed. "Wait there!"

She approached me, having followed. "I've never gone this far before, but if you want some inspiration for the stories...?"

"Hell yeah baby, do it! You can't not do it for the boy now, it wouldn't be fair."

My wife grimaced guiltily. She whispered close. "I used to wash his gooey sheets so I've actually tasted his cum before."

She left me stunned with that and went back to her brother. She lowered to her knees with her tits still bare and stretched his swimmers over his bolt upright cock, taking it into her mouth and humming her pleasure as she bobbed her head and sucked.

It took about a minute and the young guy buckled over.

Julia drank from him. She drained his balls and swallowed his cum down like a good big sister, teaching him what it's going to be like when he gets a girlfriend, as she told him again.

He pulled up his pants and dived back in the pool.

I stretched out on the lounger beside my wife. She was lying on her back with her tits still bare and her sunglasses too dark to see through.

Her dad came out onto his deck and sat with a beer and sat there watching her through dark sunglasses too. I could see he wasn't looking away.

That evening, I watched her doing her makeup in our bedroom. I couldn't help the pang of uncertainty and jealous worry at how good she looked in her little black party dress and stockings. I picked up from listening in earlier that they would be going out dancing after dinner, which meant a nightclub and other men trying to pick them up. A couple of the girlfriends were single, and they were all good looking, while Julia was hotter than any of them, or so I believed, and was feeling in the tightness of my chest as a car horn beeped from out the front.

"Hehe, don't wait up!" Julia sang gaily and pressed her cheek to mine, not offering her glossy red lips.

I watched from the window as she jumped in a car and was greeted excitedly by two of the girls. The car zoomed off and I flopped back on the bed, huffing and already churning through pictures in mind of fit, built, muscular men smiling at my wife, undressing her with their eyes. I gulped and shook my head, clutching and squeezing against the flex of my cock.

*

"Check!" James said, raising his eyes from beneath bushy, furrowed brows. He had taken a long while to make the move.

I rubbed my jaw, pretending to be at a loss. I could see my own way to checkmate in four moves but shifted my rook into the path to his king and sacrificed my queen in doing so.

James chuckled triumphantly and took the queen. "And that would be check again, son."

I lurched back and thrust my hands to my head. "And mate next move!" I conceded. "Shit."

The huge man boomed another chuckle and started re-setting his pieces. "That's one a piece. Best of five, hey?"

"Yeah, best of five," I agreed and joined in re-setting the game. I needed to creatively throw every second match to satisfy my father in-law's love of chess and thrill of competition. To play to my true ability, I would have the five games complete in no time at all.

As it was, I was watching the clock approach midnight and still churning over the mental pictures of Julia being danced with and passed around by the nightclub guys.

I ended up lying in bed watching for the flash of car lights. The sound of a vehicle coming up the street every now and then got my heart thumping. It was quiet this late at night so there weren't many. After five false alarms, headlights flashed into the driveway and I sprung to the window.

Julia stumbled from the back seat of the car giggling and holding her shoes. She righted herself and backed toward the house waving her friends off. They were calling out their goodbyes. I got back into bed and played it cool when my wife tiptoed into the room and undressed. She slipped into bed.

"Hey Jules, how was your night?"

"Hmm, amazing. Except I think I should have stopped drinking. My head's all woozy and I don't feel very well."

"You okay? Do you need anything?" I asked.

"No, I just need to go to sleep."

She cuddled up with the bedsheet scrunched beneath her chin. I drew a big breath and sighed my relief that my beautiful wife was back home to me. I kissed her head and went to sleep.

Chapter 2: Road Trip Flashing

"Oww my head hurts." Julia searched in her handbag and pulled out Paracetamol tablets. She downed a few with a big drink from her water bottle. I was watching while driving. She rolled eyes at me. "I know. Self-inflicted, right?"

"I didn't say anything." I had been watching my wife sleep with her face pressed against the seat and her mouth open for the past hour. We had gotten an early start for the all-day drive to Lake Carpelligo.

Julia guzzled the rest of her water. "I was fine until these guys started buying us drinks. They were these sweet cocktail things that tasted yummy. I don't even know what they were."

My heart thumped. I manufactured a smile. "A bit too easy to drink, were they?"

"Oh yeah! Elly and Bree kept encouraging the guys to send more too. Then we went and sat with them and every time I looked, I seemed to have a full glass."

"Oh yeah?" I swallowed hard.

"I know, a bit obvious, right?" Julia said with another eye roll. "I didn't even dance with any of them much though. And it was just this one guy who was kind of crowding me, sitting too close, just with the way Elly and Bree paired off with two of them and Sharon and Adriana disappeared together for a while, which left that one guy trying to get with me I suppose."

"Aw shit, Jules, really?"

"No." Julia giggled. "It wasn't that full-on. You could just tell by the look on his face he thought it would happen, if he got me drunk enough that is. As if!"

I shook my head. "But that's exactly what gets to me when you go out like that, Jules. That's exactly what I imagine might be happening and it's so hard to be at home waiting."

"Oh Rodney, no. You know you can trust me, don't you?"

"It's not about not trusting you. It's about not trusting them! The guys!"

Julia took my free hand and pulled it into her lap. She was pouting sweetly.

"No, I'm not saying you shouldn't go out with your girlfriends like that, just that it's hard for me a little bit."

She added sad eyes to her pout but her eyes suddenly flashed excitement. "Ooh ooh coffee!" She pointed to a takeaway coffee sign at a service centre up ahead.

I took the exit and pulled into the drive thru. I grabbed some sausage and egg muffins as well and got back on the road.

Julia swallowed a mouthful of her breakfast and did a kind of shrug and nod. "The guy was actually pretty hot, come to think of it."

I looked at her. She smiled.

"Yeah, see what I mean," I accused.

She giggled into her next bite, waving a finger until she chewed and swallowed. "Kind of reminds me of a story I was reading the other night though, huh?"

"No it doesn't." I could feel my face had flushed red.

"Oooh, yes it does," my wife sang gaily. "Except we both know what would have happened in a story."

"But that's just fantasy. That's totally different."

Julia's brows lifted. My heart rate spiked. She tilted to look then reached across and squeezed me through my jeans. "And what's this all about then?" She was biting a grin. "Will you write me a story about dance club hunks getting with me, Rod? One just like that carnival story a couple of weeks ago?"

I drew a breath, frowning down at where I was now fully erect in my wife's grip. I gulped and glanced at her. She was smiling her Cheshire grin again, her eyes wide and filled with mirth. I was confused. I frowned. "Would you really want me to?" The carnival story had a guy jacking off when she flashed him.

Julia's face dropped then she lowered her chin to look over her sunglasses. "Okay."

I gulped again. "Really? You'd like that?"

Julia nodded. "Hell yes!"

"And like, with what happened in the carnival one, in the car at the end?" I recalled a recent nightclub story I could adapt easily enough. "But in the men's toilets or something instead?"

Julia's mouth hung open, her eyes wide. She nodded a little and squeezed my cock again.

My neck and face tingled with another flush. "Would you want anything else to happen, Jules?"

"I don't know. Maybe." She shrugged. "Would you want anything else to happen?" She did another squeeze and smiled teasingly. "In the story, that is."

Relief flooded through me. I chuckled.

"You're so bad!" my wife scolded. "Jeez Rodney!"

"Yeah well at least mine's only fantasy. I can't believe some guy was actually trying to get you drunk last night. Shit Jules, that's for real."

Julia sat up in her seat. "And that isn't real?" she tossed back, eyeing the still-obvious bulge in my jeans while taking a sip of her coffee. "Feels awful real," she concluded.

I let the topic of conversation subside, along with my erection. After a little while, Julia looked over again.

"I really like your stories, Rod, the ones you pick out for me."

I smiled. "I'm glad. It's exciting to imagine that kind of stuff."

Julia nodded and looked forward. She turned to me again after a minute. "Do you want me to flash someone for real? I mean other than my silly little brother and pervert dad?"

"What?" I gulped. I looked at my wife's straight face.

"I'll do it if you like. Next car with a man driving, you could let him keep alongside and I'll lift up my top."

I did a double take, looking at Julia's chest. She had on a pale blue tank top that showed the lacy trim of her bra. Her breasts are a youthfully firm C-cup, lots of bounce and sway.

"I've done it before, back in high school," she said.

I could see the car tailgating us had two men in the front seat. I looked from the rear-view mirror to Julia. She turned and checked. I swallowed hard. "Would you really want to?"