Sisters birthday

100% fiction!

I'm arm a conservative guy by nature. My sister is the extrovert. There were 4 kids in our family. Me ,Jana ( a year younger than me) a brother and another sister who is 18 years behind me.

We were celebrating my youngest sisters 21 birthday. There was a large group of us going on a party bus for the evening, including our husbands and wives and some friends. Gradma was babysitting for us and my sister as well, so we were in. O hurry to get home and could have a fun evening. We had all dressed for the night. My wife looked amazing, but she wasn't the only person who caught my eye.

So we hit a few local bars and had some drinks and dancing. My sister wanting the whole 21 experience wanted to go to a casino too, so off we go.
I'm not a gambler so my wife and I went to the bar , found a table off to the side, and sat and listened to a band play while the others were gaming. Sitting there looking at her knowing the house was empty made me want to leave with her now. I was excited about getting her home alone and fucking her that night. That was going to have to wait though.

A couple from our group found us and said the bus was out front and we were going to the strip club.
I was like "what the hell? A strip club for my SISTERS birthday?"

We all load in the bus and head to the nicest strip joint around. The biggest part of the group settled around the stage, my wife and I found a table out of the way and orderd a drink. I was already wanting to fuck my wife , but now with the strippers and people groping on one another I was HOT. I had my hand between my wife's legs. Rubbing gently. She smiled at me. I was ready to go NOW.
After an hour or so we had our fun, time was out on the bus, and a couple people have drank way too much.

By the time we get close to home my wife is dead tired. My brother in law is passed out drunk. And this is where things get weird.
We met at moms house so we pour my brother in law into the back seat of their SUV.
I know my sister can't get him from the car to the house without help and I want to offer help but I REALLY want to go home and duck my wife.
My wife is pretty tired and has apparently lost interest because she just tells me , go help her get him in bed, she's tired anyway.
Great ! Wonderful! Fuck me! Another night fucking my hand is my thoughts!

So me and Jana take him home and drag him upstairs to the bedroom. I'm pissed now because he knows he can't handle liquor and because of him there will be no sex for me tonight.

She thanks me for helping and tells me how mad she is at him.
She say " finally a night without kids and he's too drunk to .... "
She doesn't finish her sentence but I now know that her and I are in the same boat, wanting some but not looking like it will happen.

I said "yeah same here, I was sooo ready for some ... too"
We both kind of chuckled a little.
We had both had a couple of drinks that evening, but not enough to get drunk.
I told her "hell we ought to just do it, their both asleep, at least we would be happy"
Hen kind of laughed a little. She's like "nonshit we should" and giggles at the joke.

She did look good though. She was wearing a pair of black jeans that for her just right, a thin sweater that showed off her tits and a pair of knee high boots. Suddenly I have noticed how she really does look good... no wow my sister is hot! Something I had noticed as a teenager but had long since forgotten.

I said " hell I'd do it in a heartbeat! You look great tonight"
She said "yeah right! That would be weird! "
I said "it's only weird if someone finds out, and who's going to tell?"

Oh shit ! Did I really just say that? I thought to myself.
I couldn't believe what I said. It just jumped out.

She looked at me a little surprised. But I could see her nipples through her sweater so I thought , what the hell ,this may happen. And the thought of that was a huge turn on for me. I had actually started to have a nervous shake.

We stood there silentl for a minute, neither knowing what to say. Thought what the hell and reached up for her tit and immediately rubbed her nipple with my thumb.
She said nothing and just let me touch it. She started to turn away from me. I thought we'll crap.
She turned her back to me and reached for the button in her jeans. If couldn't believe!
I reached out and touched her ass. It was beautiful. I started to rub it as she undid her zipper.
She whispered "I can't believe I am thinking about this"

She pulled her pants down slowly ,apprehensively. Before she had them over her hips I was sliding my hand down her are ass. Ass her jeans came down further so did my hand until I could reach her pussy with my finger.
She knelt on the couch with h her hands in the back of it.
I pushed upwards with my middle finger and could feel how wet she was. I couldn't believe she as this hot and wet and that I had my finger in her. I rub her and slide my finger in and out a couple of times.
She says "lets do it before I change my mind"
I did not want to miss the opportunity so I quickly undid my belt and pants and pulled them down to my knees.

She didn't look back until I was almost inside her. I held myself so I could slide it into her pussy. She took a quick breath as if she was suprised and then a gentle moan. It was hot! And wet!! Very wet!
It felt like nothing I had done before. Slide in and out. First a little slowly. Pushed it in deep. I wanted to feel her ass cheeks against me. I grabbed her hips and pulled her too me firmly. She started moving her hips back and forth. I started sliding in and out trying to maintain some composure. This may be a once in a lifetime chance, I want it to last.

She was ready though. She was telling me faster. We had barely started and she was pushing against me and pulling away. We got into a rhythm pretty quickly. She was getting wetter and hotter. Sloppy wet. I had never experienced anything that wet before.
I was getting close to losing my load so I reached around and put my middle finger on her clit and rubbed. She pushed back against me and clawed at the couch while Trying to be quiet because her husband was upstairs. I had my l ft hand in her hip pulling her to me with all I had and rubbing her furiously with the other hand. I could not hold it any longer. I knew she was in no danger and kept it deep insider while I released my load.

She exhaled deeply as I finished. Put her face on the crack of the couch that she had been holding, as I slid in and out a few more strokes, trying to make it last as long as I could.

I pulled out and slowly and ran my hands over And sown her ass until I could reach her pussy with my finger, and pushed it in one last time.
She was a mess , dripping. Between her wetness and my cum she was dripping onto her jeans which were still around her knees.
I reached for the box of tissues on the end table and handed her a couple and wiped myself as well.

It was slightly awkward for a minute. Neither knew what to say. As we. It's pulled up our pants I just said " well that was pretty damn amazing "

She said " yeah but now it's kinda weird"
I said "yeah but I think weird made it better".

She made me promise not to tell anyone.
I said "we are both married and who would I tell anyway?"

It was really late by now so I headed home.
The wife was fast asleep when I got there.
I just crawled into bed and went to sleep myself.
I woke up the next morning with my wife looking at me.

She had her hand down my boxers holding me. She ole up wanting sex and was kissing on my chest.
She whispered to me. "You have a wet dream last night?"
I said "I don't know... why?"
She said "your kind of sticky down there"