No, as far as i know, I've not been seen naked by non-medical personnel. However, when I was 30 my appendix ruptured in the middle of the night and after going to the ER for surgery, I woke up the next morning in a hospital room. A guy was in the bed next to me surrounded by his wife, son and two teenage daughters. The curtain was pulled around my bed but was open a foot or so where it would join up with my roommates curtain. Of course the one daughter, I'm guessing around 16 years old, was sitting in the corner of the room and had a perfect view of me and my bed.
The nurse kept harping on me about how I needed to pee but wouldn't let me actually get up to use the toilet, so she gave me one of those plastic jug urinals to use in bed. My wife is standing right next to my bed, the nurse kept walking in and out doing who knows what, and a 16 year old girl is sitting 15' away staring at me. On top of all that, the nurse kept threatening to catheterize me if I didn't go on my own. Of course with that kind of pressure, no matter how hard I tried I couldn't pee. After a half hour or so the nurse tells me she's going to do an ultrasound on my bladder to see if it's full. When she comes back wheeling the little machine over by my bed, I look through the curtain to see the teenager watching the whole thing with huge eyes. I don't really blame her, I would have done the exact same thing. I'm wearing underwear under a gown under the sheets. So the nurse pulls my gown up to my chest, tucks the sheet into the top of my underwear and lowers them just a bit. She does the ultrasound, tells me it's full, and that she's going to catheterize me. As she is wheeling the machine out, she tells my wife to help me remove my underwear and that she'll get the materials and be back soon. I glance through the curtain and now I see both daughters craning their necks, staring at me wide eyed. Obviously, my roommate and his family could hear everything through the curtain. I'm terrorized by the thought of what is to come, not to mention the fact that it's going to be done in front of an audience. Luckily, just then I hear my roommate say that they should all go down for some breakfast. One by one, they all parade out of the room, each taking their turn to pause at the opening of the curtain and get a peek. Thank goodness by the time I had to present the goods they were all gone.