My experience, which also fits on the topic "Seen naked at a Hospital or clinic by non medical personel" (in this case a painter) happened when I was aged 17, I had a little disconfort on the left side of my groin and testicle, but I couldn't tell where the pain was exactly located, so I went to the Doctor, he examined me (another story) and he said I needed both testicular and inguinal ultrasound. Made an appointment and went home. The day arrived so I made it to the Hospital, waited for about 15 minutes and they called my name. The guy that opened the door turned out to be the Male Technician who was about to perform the ultrasound. He was with another male, another technician I assumed, both in their mid 30's and dressed in white as almost all doctors do. He asked if I have had any other ultrasound before, I said "No, it's the first one ever" and he replied "Relax, its very simple and no painful at all" he explained me the upcoming steps and all about the cold gel as well. Before starting he asked me why the Doctor wanted that exam on me, and I said "because I have a pain on my scrotum and/or my groin", then he told me "well, drop your pants and underwear down to your knees, lay down on this exam table and we shall begin", I did so with a bit of embarrasment because both guys kept staring right at me all the time while I was getting half naked. Then I layed on the table, he sat on a chair next to me, facing the monitor and the other guy sat on a stool right at his back almost in between the technician and me, so he could check the monitor as well but by looking over the tech's shoulder.When I was in position he asked, "where is the pain located?" "I think it's around here" I replied pointing with my finger. He said "you mean here and here?" (and he actually touched my groin and testicle with his index finger while he was asking that). "Well just relax while I'm doing this, ok?". At first he put some gel on both sides of my pubes (really felt cold!) in the inguinal area, over my pubic hair (which later on was a mess to clean it properly, All my hair got sticky, had to shower afterwards) It took about 5 to 8 minutes on the groin, and then he said "Ready! Now let's move to the testicles".He put some gel on and started rubbing the probe gently over the left testicle. While he moved it my penis bend to the left side getting on its way, so he grabbed it with 2 of his fingers and said "could you hold this upwards please?". I did so and realize that the touch of his fingers plus the movement of the probe was making some (unwanted) effect on me: I started getting stiffy!Luckily I was holding the penis upwards with my hand so I moved it and could slightly cover it, so no one can notice my semi. At that moment there was 2 knocks at the back door of the room, it was located right at "my feet", meaning on one end of the exam table. (Apparently this door leaded to another areas of that place- and if somebody opened it, could have a nice full view of the exam perfomed there). So It got open and another doctor or colleague of the other 2 guys entered the room, looked over my half naked body and then remain standing between the two of them. "what are you guys doing?" he said and watched at the screen, the technician perfoming the ultrasound murmured something and pointed to the screen saying "see?, this... and this.." I started getting a bit worried because they seem to be watching something strange on the monitor. That guy remained in the room for the rest of the exam too. It was a very thorough one, and it lasted about 20 minutes. When he was done with the left one, he moved to the right testicle, I thought "why is he doing that? The left is the one that's aching!" Then again the back door opened without knocking on it, and another man poke his face, saw me (and my balls) being probed and examined, and shut the door, but 2 or 3 minutes later he opened it again and entered the room, saying "Hi guys!" (he was wearing a blue suit so I can't tell if he was a doctor or a technician, but the other guys seem to know him pretty well, because they didn't say anything about his presence in there) they exchanged a few words and after that he stood at one side of the exam table, next to my feet and remained there for the rest of the ultrasound performance (which was a few minutes left to end). So at this point there was 4 men(!) in the room with me, witnessing the exam, it was a bit weird and couldn't understand why I suddenly became a kind of "show" to watch! =O By this time my erection have gone and my dick started shrinking a little, still hold it under my left hand, and I started feeling embarrased again because of this "crowd" watching me naked waist down.Then the tech guy said "Ok , we're done! Wipe all that gel from your nuts" so the blue suited guy who entered the room last, riped and handed me a bunch of towel papers. Then I started wiping all my balls, and pubic hair but it was quite difficult, so the guy gave me more and more towel papers untill I finally could get rid of (most of) that gel. And suddenly, to top it all, the door opened again, and there was a painter (I can tell he was, because of his filthy outfit plenty of paint blotches) standing there looking at me for about 10 seconds, while I was trying to clean my balls. He took a good look at me and after that he asked a question to the male technician who replied something I couldn't understand (I was busy enough trying to wipe and cover myself asap!) and then he left, luckily shutting the door (didn't want more "audience" to come in, that day!) After some cleansing put my pants back on and right after the tech said he find a few cysts or nodules in my left testicle, and that perhaps they caused the little pain, but they were so small, they were really not important, nothing to worry about as long as they stayed the same size.(fortunately they did) some years later I underwent some other testis ultrasounds as a control of these small cysts, but they were normal "one on one procedures" meaning one and only man perfoming the exam. But I won't forget this one, which was the first and weirdest I've ever had!