(for reader clarification: This is the fifth in this series of stories. Little Sister Surprises and Sis and I at College Part 1, 2 and 3: We continue to develop our sexual relationship preceded this installment which is what this series focuses solely on. Much more went into our relationship than sex but for the sake of brevity and to save from recounting what most would find mundane that has been left out. This all occurred in the mid 70's when the pill was first widely available and there were no STDs with the implications of today's. Amy reviews sections and we try to keep it as accurate as our memories allow. Actual names have been changed. You will need to read the prior section to understand the state of mind and undress we were in when this starts)
We were close to the house after Amy had introduced me to her newly shaved pussy but since it was still relatively early in the evening I told Amy reluctantly to put her pants back. When we pulled up in the driveway we could see Michelle and Bill were sitting out on their porch drinking beer and smoking. Ever since Michelle had flirted with me in front of Bill I had been thinking about ways to at least get to see her shaved pussy or even better yet get to experience it. Amy was one jump ahead of me it turned out.
"Let's go talk to Michelle and Bill before we go in," she said as she exited my car and headed their way.
I followed her not knowing exactly what was going to transpire but as I was to learn over the years Amy had a radar for sex. The smiles on their faces as we approached melted away any hesitation on my part.
"Care to join us for a beer?" Bill asked even as I could see his whole focus was on Amy whose clothes even when fully on showed the wonderful curves of her body. "We only have the two chairs out here but we can go inside and be more comfortable," he continued.
We followed them inside their house. I had never been past the front porch before and I was both impressed with how nice everything was but there was a very visible Harley-Davidson theme to things.
"I didn't know you were into Harleys," I mentioned to Bill as Michelle went to retrieve some beer for Amy and I.
"I used to ride but sold the bike to put the money in my construction firm. We still go to the parties with our friends who ride because Michelle and I really enjoy them but I sure miss the bike," he lamented. "You two might like the parties a lot," he continued with a smile. "Michele is always a hit at them and I bet Amy would be the same."
Never one to be shy and already being turned on by our play on the ride Amy gave her best innocent little girl impression, "What do you mean I would be a hit?"
Michele emerged with our beers just as Bill began to explain to Amy and she immediately took over the conversation, "Since I kind of feel like Amy and I already know each other pretty well let me tell her," she said with a smile. "We have a small group of couples we always meet with after the parties and they are all very sexual. We have a kind of swapping thing we do between the couples." Michele continued as she watched Amy for any sign of a negative reaction and when it was clear Amy was listening wiuth interest, "Amy is so pretty and I can vouch for how hot she is and from what we see of you two we think you would enjoy the group and they would enjoy you."
Before I could respond Amy took charge, "We would love to go to one of those parties with you. It sounds like a lot of fun especially if the men and women are as attractive as you two."
Michele and Bill preceded to lead us through their evolution as swingers and what the parties were like as we drank beer and after some inquiry into whether we were cool or not smoked a joint. Amy and I were boiling hot when we got there but after the pot, beer and description of what sounded like incredibly sexual people having lots of fun together we were both no doubt noticeably turned on.
I was waiting eagerly to let the older couple take the lead but instead Bill asked me if I would like to see a bike he was building in the garage out of a basket case. Of course as a guest I indicated I would but as soon as we were in the garage Bill turned to me.
"I hope it is OK but Michele is going to hit on your girlfriend while we are in the garage. I would love to fuck her if you two would like to do some swapping tonight. I know you would enjoy Michele and she has been wanting to do you since you moved in," he said. "Michelle loves women and she got the idea the way Amy showed off to her that she did too."
I could not believe my luck and I am sure it showed with my enthusiastic reply, "She loves women and is as good a fuck as I have had! We were just talking this evening about one of my female friends she was interested in."
Bill preceded to tell me what Michelle liked and I did the same with Amy. Surprisingly it was very similar turn ons for both of them although as I was to find out Bill had not told me everything about Michele. When we opened the door between the house and the garage I could hear the moans of my sister coming from the living room. Bill and I entered to find sis on her back on the ottoman with her legs spread with Michele between her legs. Michele pulled her tongue out of Amy's pussy to show Bill the wet shaved pussy she was licking.
"Amy liked the looks of my shaved pussy so much she shaved hers," Michele murmured. "It tastes so good!"
I looked over at Bill and he was beginning to remove his clothes so I followed suit. Once we were naked Bill motioned me to a chair that allowed me a perfect side view of Michele and Amy. Both our cocks were standing at attention as we watched Michele make Amy moan in ever increasing volume. Just as I thought Amy was about to come to orgasm Michele stood up.
