I danced a lot of two-step and enjoyed looking at all the ass shaking during the line dances. There was one hot mama named Roxanne who was obviously looking to use me for more than dancing. She was my sister’s age and she had long curly red hair and green flashing eyes to match. She wasn’t trim but she wasn’t fat. I like a bit of meat on my woman anyhow. Roxanne had some big titties and a nice round ass. I was buzzing pretty good and just finished a slow dance with Roxanne. My cock was hard as I was headed back to the table. Roxanne had taken a beeline to the ladies room.
As I approached the table I saw my sister Peg sitting there. She told me that she had just got off work. My sister was 35 at the time. She had long black curly hair and deep blue eyes. She too wasn’t skinny by any means. She has a nice set of tits and a nice full ass.

I could see why my brother in law married her. She was hot. But I was drunk and surely this is why I noticed it at this time. I thought that I saw her give me an up and down with her eyes. I also thought that she couldn’t help but notice my hard on. Did I see her eyes flash? I sat down and looked around for Mike. Not seeing him I asked Peg if she needed a drink. She said she did rather curtly. She seemed to be looking for Mike too. 

I went to the bar and got her a whiskey and coke. I asked the bar tender if he had seen Mike. The bartender looked sly and told me that Mike had went out the back with Roxanne’s sister Suzanne. 
When I came back to the table I saw that Roxanne and Peg were having a conversation.

Roxanne was going to greet me until she saw me place the drink down in front of my sister and sit down. She gave me a dirty look and without a word got up and left the table.
I was confused. My sister just smiled. I asked what was up and she just said that Roxanne was the extremely jealous type. She laughed and placed her hand on my thigh.
Her hand almost burned through my jeans. I looked her in the eyes and my cock did a jump. The thought that this was my sister was fleeting. I had been all wound up by Roxanne and I was drunk enough to not give a fuck.

She left her hand on my thigh while we shared drinks and talking. We got up and danced a few two steps. I watched my sister really dig into some line dancing. It seemed she was shaking her ass just for me. I saw Roxanne trying to get my attention a few times but saw her eyes just narrow when she saw me and Peg dance.
Apparently she didn’t know that Peg was my sister. This seems to be a fact that I forgot as the night wore on. No one else seemed to notice when Peg and I were slow dancing.
I was beyond hot now and grinding my cock against her.

Closing time came all too fast. Drunk as I was I didn’t think that this would lead to anything.
We got a cab home and the whole way my Sister’s hot hand was in deep on my thigh.

My cock was about to bust my jeans. She leaned her head on my shoulder the whole ride home and her hot breath on my neck was just too much.
When we got to the house I stumbled off to the spare bedroom while Peg went to the restroom. I was debating what to do. This was my Sister and my brother in law could come home anytime. She was drunk, but maybe not as drunk as me.
I heard the toilet flush and then the shower start. My mind raced.
I slowly went down the hall. The bathroom door was still open and the steam from the shower was coming out. 
I peeked in. 

There was my sister Peg naked. She was gorgeous. Her big tits had large pink nipples.
Her pussy was as black and curly as her hair. She smiled at me.
She asked me what I was doing dressed. I didn’t need another hint.
I undressed in a heartbeat. My cock was so hard it was thumping.
I watched her eyes focus on my dick. Her nipples went instantly hard.
She climbed into the hot shower and I was right behind.
She soaked her long black hair under the water and tilted her head back.

I didn’t hesitate to hug close to her back. I bent my knees and ran my hard cock up the crack of her ass and my hands went to feel her large soft tits. My fingers squeezed her large nipples.
She laughed and shuddered. I kissed her neck as her hands reached back to grab my hard cock. She turned and gave me a big hot French kiss. 
Her hands circled around my back. I could smell her pussy musk in the hot steam.
My cock rubbed against her soft belly. I felt her pubic hairs tickle my thighs just below my balls. My hands were on her big ass. I bent my knees again so that my hard cock would rub up her pussy slit and through that great black bushy mound.

That was about all I could take. I was going crazy feeling her hard nipples brushing my chest. I grabbed her tight and kissed her deep. I swept her up into my arms.
I swung her around and up held her legs up. I carried her dripping wet out of the shower to her bedroom. We were exchanging butterfly kisses and deep tongues all the way down the hall. My hands were squeezing her close.
I took her to the waterbed and set her down while kissing her. My mouth moved over her soft hot lips. Over and over we kissed. I started to kiss down her neck and quickly to those hard nipples. I sucked the left then the right. This was only a pit stop. The musk from her pussy was drawing me down quickly. I kiss down her belly. My nose filling with her. Wanting to taste her. Her hands pushed me urgently to my destination.

My mouth was soon on her hot pussy. It was sweaty and sweet. Hot and musky to my mouth. I licked up and down her hot slit. I circled deep around her hole and even got a few flicks to her asshole. She bucked and was signaling with her hands that I should rotate. So I rotated my body so that my cock was right above her face. She immediately sucked my cock deep into her mouth. I continued to lick and suck her pussy until I knew she was coming. She couldn’t hold my dick in her mouth any longer.
She was screaming and cumming hard. Soon she was screaming for me to fuck her.
She wanted my cock in her right now.
It was lucky that I hadn’t cum yet.
I rotated and was over her. I spread her legs and rammed my cock hard up into her.
She was so wet and hot that I went to the hilt. It was frenzied fuck.
I was thrusting like a cave man. Grunting and moaning. She was screaming.
I was so turned on because this was my sister. I was fucking my sister!
I watched as her tits jiggled violently with their hard nipples.
I don’t know how I held out so long from cummming. It must have been the alcohol.
I told her to turn around on all fours.

She was so hot she did it. It didn’t take but a second. I was ramming my sister doggie style. She was screaming and cumming so hard.
I looked over at the nightstand and saw a bottle of what could only be KY jelly.
My mind swirled. I thought to myself what a dirty slut I was with.
Without missing a thrust I grabbed the bottle and squirted it down her ass crack over my thrusting cock. So the whole area was well lubed. As I continued to fuck my big sisters hot pussy I began to work my finger around her asshole. She began to buck and scream even more. I took a chance and pushed my finger into her ass. She went crazy.
She flat out said “fuck that finger, little brother, put your cock up there!”
I was just dumb struck. But not stupid.
I pulled my cock out of her pussy. But she did stop me. She told me to look in the drawer next to the bed. I did. There was a large dildo there. She told me to put that into her pussy. I did as I was told cause I was gonna fuck my sister’s ass.
It easily replaced my cock in her pussy.
I put my cock head up against her asshole. I pushed. It went in slowly
She took over working the dildo in her pussy. 
She moaned for me to fuck her in the ass. So I pushed harder. My cock slid in further.

I pulled back out about half way and squirted the lube liberally on my cock. I then pushed hard all the way in. It was amazingly soft and tight. I started to fuck her in and out. I could feel the dildo working on the other side. My sister’s skin was hot pink and red. I knew that she was beyond orgasm into some heavenly realm that I could only dream about. I was so turned on my cock in my sister’s ass. I was amazed that I hadn’t come yet. But soon she was bucking on my cock with each slam that I gave into her ass. I felt the build coming. The cum was rising in my balls. I was so dizzy with the thought that I would fill my sister’s ass with my cum. She started to beg me to fill her.
I shot my load so hard and so deep in her ass while she continued to fuck herself with the dildo. We collapsed in orgasmic ecstasy. 
I passed out until the morning. 

I awoke to my sister washing my cock with a hot washcloth.. Soon after that she sucked me hard. She didn’t wait and climbed on top of me . With her hot bush rubbing her thighs and me across my legs, her tits bouncing I didn’t take long to cum again hard into her soft hot wet pussy.
We have had similar encounters since. Some with my niece involved but that’s another story.