My Uncle makes me fuck my sister!

While their parents are away for the weekend, Robbie and Donna pay a visit to their stoner Uncle Billy and Robbie discovers a few things about his sister!

So, my life just got crazy thanks to my Uncle Billy.

It all started when my parents said they were going away for the long weekend without us, by us I mean me and my sister, Donna. I mean, I was ok with that, I’m 23 so I don’t really want to be going anywhere with my mom and dad anymore, but I thought they would still take her because she is still 18 and it isn’t her birthday until next month but, no, they were going and we weren’t.

Fair enough, I thought, I’m still going to spend most of the weekend round at my Uncle Billy’s place, drinking, smoking and playing computer games.

At 40, Billy is my dads younger brother. He got divorced a couple of years ago, then he moved into an apartment near our home last year and I found out he is not only a major stoner, hence the divorce from what my dad says, but he also loves games, mostly racing and shoot em ups. So I started to go round to his place and hang out with him. That was my plan for the weekend.

“Keep an eye on your sister” was my dad’s last words to me, I nodded and said “Sure dad” as they left on Friday evening but by Saturday afternoon I was getting my money and putting my shoes on ready to go to my Uncles place.

“Where are you going?” Donna asked, “I’m off to Billy’s for a games session” I replied, “Oh! Can I come too!” she bounced up and down, her 34C titties jiggled in the crop top she wore, my sister didn’t do underwear, I stopped staring and looked at her face, this was my sister after all. “You don’t game” I said, “Why do you wanna come?”

“I do” she argued, “I’m just not very good at it yet, please Robbie, all my friends are still spending the long weekends with their parents so I have nothing to do, if I have to stay here alone I’m gonna go nuts!” she pouted, “Please, big bro?”

She looked so pathetic I said, “Alright, but get ready quick” she grinned, “I just have to put my sneakers on” she said, she wore denim shorts that my mom called “Daisy Dukes” because of some old TV show and as she bent down to put her shoes on I had to look away, too distracting. “I would have come even if you had said no” she added, “He’s my Uncle too you know” I just nodded, couldn’t argue with that.

We wandered over to Uncle Billy’s, I called in the liquor store on the way for some wine “You guys drink wine?” Donna laughed, “yep we do” I laughed with her, “’cos we’re sophisticated” I bought 2 bottles so Donna could have some too if she wanted and we arrived at Billy’s

“Hey! My favorite Niece and Nephew” he said as he opened the door, “Your only niece and nephew Uncle Billy” Donna laughed and hugged him, “Yeah, whatever” he shrugged, we poured some wine and set up the game console, Billy and I raced, Donna watched curled up on the sofa, then Billy got out his gear and we smoked.

I almost protested when he handed her the Doobie but then I thought, what the hell she’s over 18 and I’m not gonna be called a buzz kill by my cool Uncle.

We played some more and got worse of course, then Donna had a turn and was terrible at it, crashing into everything and giggling all the time, then we had a break to get more wine.

“Time to bring out a Billy special” my Uncle said grinning as he waved a long joint at me, it was wrapped in light blue paper and I knew this one was gonna be strong. “You gonna give some of that to Donna?” I asked, “Sure am” he said, “Lets see how fun and giggly she gets” he waggled his eyebrows at me suggestively.
“Dude, she’s your niece and my sister!” I was a bit surprised, “She got tits and a pussy man” he replied moving back into the living room, “who the fuck cares about anything else”

We drank and smoked some more and as the effects hit me I began to look at Donna as she sprawled on the sofa, her petite frame, she is only 5 feet 2 inches, with her bare feet and tanned legs because she always wears shorts. Combined with her little crop top that kept riding up revealing her flat stomach and allowing her tits to jiggle all the time.

I looked at her cute, dimpled face, her blonde, shoulder length hair and sparkly blue eyes with their now enlarged pupils, she was stoned and she was hot.

Billy sat on the floor with his arm on the sofa, he began to stroke Donna’s legs, “Mmmm, that feels nice” she sighed, he moved up to her thighs and began to kiss her legs too, she sighed louder, “You know what I like Billy” she said, I looked at my Uncle, had he done this to her before. I met his eye and he winked, “Holy fuck” I thought.

His hands moved higher and unfasten the button on her shorts, pulling the zipper down, Donna wiggled her butt to help him take them off, I couldn’t help myself, my cock was straining in my jeans as I watched my Uncle move in and begin to lick my sisters pussy, “Oh yeah” she sighed, “That’s so good”

She looked over at me, “that probably need some air Robbie” she purred, I looked down at the tented bulge in my pants, slowly I lowered the zipper and pulled it out, “Oooh yeah!” she sighed, “You have a nice cock Rob, I’ve seen it in the shower a couple of times and I like it”

I laughed, I couldn’t help myself, my sister had just admitted that she had watched me in the shower where, I’ll confess, I sometimes jerk off, had she watched me do that?

“Come here” she curled her finger at me, I moved over to the sofa, Billy was still eating her cunt, she reached out and took hold of my hard dick, “I want this in me” she moaned.

Billy must’ve heard her because he moved away, wiped his mouth and said, “she’s all yours man” I moved across and pulled my pants down, my cock was so fucking hard now it almost hurt. Was I really gonna fuck my sister? I heard Billy’s voice in my head say, “She got tits and a pussy man, who the fuck cares about anything else”

Hell yeah, I was gonna fuck her!

“Oh fuck yes Robbie!” she sighed as I slid into her wet slit, “do it, do it now!” Billy quickly whispered in my ear, “be careful dude, we don’t wanna knock her up!” I nodded and began to thrust my cock into her, Billy knelt on the sofa and got his own cock out, Donna leaned forward a little and took it in her mouth, I couldn’t believe what was happening, I was fucking my sister while she gave our Uncle a blow job, this was so messed up, but so fucking good!

“Mmmm!” she moaned with a mouthful of cock as I increased my speed, she reached down and rubbed her clit before pulling away from Billy's dick, “Oh fuck yeah, make me cum” she groaned.

I began to fuck her hard and felt the orgasm building in both of us, remembering what Billy said I pulled out and aimed my cock up her body, “Oh fuck I’m cumming!” we said together as her hips shuddered and I shot four large ropes of cum up her stomach and onto her tits, “Oh fuck yeah guys!” Billy sighed and dumped his load on Donna’s face, she opened her mouth and caught some, swallowing it with relish.

We cleaned up and poured the last of the wine before lighting another Doobie, after we passed that around Donna stood up and walked towards the bedroom, “Ready for round two guys?” she asked.

We followed her in and climbed, naked, onto the bed, “Time for some of this” Billy handed me a tube of lubricant, I spread some over my rapidly growing cock and watched as Billy lay back, rolled on a condom and Donna mounted him Cowgirl style, as I became fully hard she bounced on his cock, her perky titties moving in time, fuck she was hot.

“Come on” she leaned forward on her Uncle, “put in in here” she opened her ass cheeks and I moved in and penetrated her from behind, “Oh fucking yes!” she groaned, “this is exactly what I wanted” at that moment I realised that my sister had been waiting for this for a while, how often she had been to my Uncles since he moved there I didn’t know and right now I didn’t care, I just wanted to empty my balls into her ass.

“Oh! Fuck! I’m cumming” Donna sighed and shook as she climaxed, Billy followed her quickly and after a few more thrusts I filled her hot little ass with everything I had, “Fuck yes!” I moaned, I have never cum so much and so hard.

We rested a while and then headed home, just in case our parents returned unexpectedly, but no, I got a text saying they were having a great time and hoped we were ok, “We’re just fine, don’t you worry” I sent back.

We entered the front door and Donna said she needed to sleep, I said I was going to get some water and then do the same. She stopped part way up the stairs.

“Hey Robbie, don’t forget Mom and Dad don’t get home until Monday” she smiled, “Yeah I know” I replied, “And?”

“Well” she grinned, “That means we can go back to Uncle Billy’s tomorrow too” she laughed and ran up the stairs to her room. I smiled, she was right, we could!

The End