The doctor asked if I would like to be part of a study and take part in research project. She explained that the test was based on the theory that sex...al activity is good for the cardiovascular system and increases the heart rate. Having done the treadmill test in the past, I opted for the new test. An appointment was set for the following week.I arrived at the office at 9 AM as instructed. Nurse Heather greeted me and led me into a room with an examination table and a machine on a cart. I. As I slid back between her legs and began licking, I felt another tug at my head. This time it was my girlfriend, and she asked if she could try. We both looked at her friend, not sure what her reaction would be. I had always thought my girlfriend had bi-sexual curiosities, but no one imagined she would try to lick her best friend’s pussy . Caught up in the moment, her friend said “I guess so, but I’m not licking you”. So my girlfriend knelt between her friends legs, stuck two fingers inside. I felt her spread the protective cover that enclosed my clitoris. Then she had me at her mercy as she moved it up and down, then left and right with her tongue.She wet my vulva with the flat of her tongue. I was on fire when she went back to my clit and I was ready to cum. I was rocking to her every move. When she inserted her thumb into my anus. I began to orgasm immediately. I continued the uncontrollable spasms as she fucked my ass with her thumb. I was a complete wreck by the time I stopped. Nearly 28-30 color bras she has and I simply came and sat on the sofa.Anjali finished her bath and came near me in a transparent saree and she tied towel to her head she was sexy in wet and told me that shall we have tiffin then I said OK. We had our tiffin and we both came to the waiting room and we sat on sofa and started talking to each other and we started talking about our personal lives. She was in transparent saree while talking my eyes was on her milky white boobs and navel and my rod.