1 day due to some reason it happen it was only me and him in our shop and were about to take a day off. We winded up our safe and shop for the day. An... were on our way he started his flirting with me but this time i did not excepted what he said. He directly said your bra is very old why don’t u buy a new 1 4 yourself. And was very shy cause even i knew i have bought a new 1 but did not had enough time to go 4 it. I till date don’t know y but i did not mind what he said. And i replied that i. A moment later, he quickly slid the panties off her, exposing her wet and eager cunt. He walked his fingers teasingly around her bush, getting closer and closer to her slit. I could hardly believe the scene, my lovely sexy wife spread out on her back on our bed with her father’s seventy-year-old best friend all over her, while her father sat downstairs watching TV. I watched as Malcolm used his fingers to spread my wife’s pussy lips, exposing the inside of her pink love hole so that he could. Her sight made me totally forget my self and simply stare at her and long to see more of her soft young body. Which didn't escape her attention, "sis, wake up!" she said and I heard her but couldn't move or speak. "Sandra why are you staring this much at me, haven't you seen a female human before?" she said sarcastically. I woke from my stare and was flushed from the fact I was sexually eyeing my baby sister, "shelly, what do you think I am? A female monkey or what?" I answered to hide my now. I was of course trying to avoid her finding out the truth but she new me well and got it out of me. The weird thing was that she liked the idea, it excited and thrilled her. What is more she found that her husband thought the same and later they admitted to me that it had brought them closer together. Our six became eight though eventually they had to move away to the other end of the country.Whilst none of us wanted to indulge in partner swapping when we were together with us girls dressed in.