Went in for my annual skin check at my dermatologist's. This time, after I was shown to the exam room, the nurse said, "Take off all your clothes," and handed me a folded paper towel about the size of a bath towel. (Last year, I'd been asked to leave my shorts on. They came off as she examined my genitals and anus.) So I stripped naked, and waited for the PA to show up.
She thought my "attire" was fine, and after examining everywhere, while I was sitting, then standing, first with her eyes, and then with a 10x loupe, she cut out a few biopsies and we were done. Just like the last PA, she was very thorough about examining the entire surface of my penis (foreskin retracted and forward), inside the urethra, and closely examined my testicles, and my anus.