My first genital medical inspection happened at a scout summer camp. I must have been between 11 and 13 at the time. It was the first day after arriving and each camp unit was taken to the main building for a brief medical check.
We were told to undress to our shorts and line up side to side. A male doctor/female nurse team then checked us out from left to right, one at a time. Ears-nose-throat-scalp for one kid, then the next kid, etc. The Doc was doing the checking in systematic order while the nurse held a clip-board and took notes. The exams were pretty thorough.
Natch, some kid started giggling and smart mouthing and the doc stopped what he was doing to single out the "smart-ass" with the "you think this is funny?" drill sargent type put down. Follow-up giggling was put down as harshly and immediately, and the line eventually stood at attention, side to side, looking straight ahead, as the doctor resumed his checks.
After he had completed checking everyone's head, nose, ears, etc. he then set a low stool in front of the last kid, sat down and started back down the line with stethoscope to check everyone's chest, mid sections, front and back, feet, legs, etc. Natch there was again some giggling and the doc, again, effectively put it down.
At that age I don't think I had ever been "handled" that much by a stranger and in a public setting and was thankful that the doc had intimidated everyone enough to be afraid to do anything but do what the doctor said and otherwise look straight ahead. Boy, as spine chilling as that was it was also a bit embarrassing and I was glad it was over.
Oh ... but it wasn't over. What came next was a genital, hernia and butt check. The doc started down the line for a third time and this time, one by one, he lowered our shorts and inspected out testicals and penis and had us turn around and spread. It took a minute or so for each for each of us. God, I wouldn't dare look to see what he was doing to the others but by his comments and instructions it was pretty obvious. How long before my turn? Soon? For ever? Then he was forever checking the guy next to me while I looked straight ahead ... at the nurse who was standing right next to the doctor. She was alternately watching what the doctor was doing, taking notes, and looking at me. And soon she would be watching what the doctor was doing to me.
I think I was frozen and petrified while being inspected. I remember the doc telling me to relax a few times, and I remember watching the nurse who was watching what the doctor was doing. I know my arms and legs were covered in goose bumps ... until the hernia check part. That hurt. Finally he pulled up my shorts and went to the next kid. At some point I believe I saw the nurse smile.
I believe this is my only complete memory of that summer camp. I don't remember what else we did.