I started wear thongs in High School after experimenting with bikini briefs and then string bikinis. I remember my senior year I had to get my annual sports physical for track. At the doctors office the nurse lead me back to the exam room and handed me a hospital gown and told me to undress down to my underwear and put the gown on. She left the room and I got undressed leaving my red Jockey thong on and put the gown on. The doctor came in a few minutes later and started asking his questions, even if I was sexually active. Which I was very bisexual by that time. He asked how often I was having sex and if I was using protection. At the time I had a GF and a FB so I was pretty active and being safe. He started the exam checking my heart and lungs. Then had me stand and bend over to check my spine. Most of all you know those hospital gowns are open in the back and when I did this it exposed the back of my thong to him. He made a comment that most guys my age didn't wear thongs and asked me how I liked them. I told him I liked them. He then told me to pull them down and he stared checking me for hernia, holding my balls and making me cough. After a few coughs he held my dick in his hand and examine it turn it this way and that and I got hard as he did. he then let go and said everything looked good. He then told me he was going to do a prostate exam on me. At that time in my life I didn't know what that was and he told me to bend over the exam table. I heard him open a drawer and close it and then I felt cold lube and his finger on my asshole. My dick had gotten semi hard but went back to full hardness when he put his finger in me. I felt him turning and twisting his finger around and then I felt a weird sensation and next thing I knew I was cumming. He pulled his finger out and said he was sorry about that, sometimes that happens. He gave me some paper towels to clean myself with and told me everything looked good. He cleaned my cum off the floor and said I could get dressed and he meet me at the front desk. I took my time cause I in orgasmic bliss. Once I got to the front desk he wish me good luck with the season and if anything came up to come back and see him. I never did though.
I had a skin check with the dermatologist and his nurse was super hot. So I'm in the middle of the room in a skimpy thong while she marked areas for the doctor. She was not in a rush