My cock was tenting my boxers. And I could feel the lust rising within me. I looked at my sister and noticed her butt sticking out from under her nigh... shirt. It was bare. My voice was shaking, “Tiff are you not wearing panties.”She looked back at me and I swear she glanced at my crotch and saw that my dick was hard and poking out the hole in my boxers. “No silly. It is a thong,” she said while pulling the hem of her shirt up to reveal a red mesh with black ribbon thong.I gulped. I want to. I showed my wife the web site and she read through the pages as well. When she was done she turned and smiled saying, “OK. Lets try this.”I called to make an appointment and was told by the very nice lady that she suggested to all her first timers to come in on a Sunday as it was slower and we could get a better feel if it was right for us or not. The first open Sunday was in two weeks so with my heart pounding I booked it. She suggested that we wear something sexy and refined. A suit and. And wait for round 2.Well that was a fun experience and I was still hot for him as a man but I have to say when we got together and started to explore each other and rubbing bodies and a lot of kissing we both exploded our loads onto each other and then just hugged each other and just held each other in our arms until we dozed off was very memorable and enjoyable. The next morning we both had the uh oh what the fuck did we do and was this right, we went our separate ways for the week cause we. I let out a muffled shout and arched my back. I glared at her. "Aww... Did that hurt?" "I think your five minutes are up" I replied staring furiously at her. I grabbed her butt and began lifting and pulling her up and down on wet dick. Faster and faster. She began to moan and I pulled at her hair. I spanked her and held her down on my dick, forcing it as deep as it could go. "Get off." She slowly stood up. I stood up with her and we stood staring into each others eyes, slightly breathless. "Get.