I have a close friend I've known since 6th grade. In due course, we married, had kids and divorced by the time we were in our late 40's. Not long after he split up with his wife, he met a crazy indian girl in her late 20's.. She hooked me up with her friend in her early 30's. My gf was quite impressed with my oral skills - something she told my friend's wife about (apparently her husband was not particularly talented in that regard). Anyway, my friend's wife would always make jokes about how she wished she could experience for herself my alleged skills. I had seen her naked skinny dipping and sharing hotel rooms and her dark skin,and jet black trimmed pubes contrasted with her pink inner labia in a very exotic and appealing way and I was certainly turned on by the idea of burying my face between her legs. Importantly, she was very promiscuous - a fact that everyone knew but my friend seemed to be blissfully ignorant of - so much so that I began to suspect that he liked the idea of his wife fucking around.
So, Memorial Day approaches and we make plans to spend the day at my place hanging out of the deck, drinking beers and later on firing up the grill. They arrived at the scheduled time of noon and my friend announces that he was called into work and that I could hang out with his wife all afternoon and that he'd call when he was about to head over to see if we needed anything. Rightly or wrongly, I interpreted him leaving his young hot slutty wife alone with me for the afternoon with the comment that he would call before coming back as permission to do whatever she would let me. Within minutes our clothes were off and I was maneuvering to get myself in position to go down on her. Much to my surprise, she offered some resistance and kept her legs tightly together and said "as much as I'd like you to do that, I'm not sure you want to - we just had a quickie before getting in the car. I'm kinda messy."
I quickly weighed the pros and cons of the situation - I was free to experience her beautiful and exotic pussy if I wanted to, but it would mean also experiencing a close friend's cream pie. The dirty aspect of tasting my friend's cum mixed with her own female secretions was turning me on and my decision was made. "I don't give a fuck - I'm doing this." Her legs immediately parted to accommodate me and so began a wonderful afternoon. By the time he called we were spent and the grill was fired up.