It happed in high school when I was 17. During break time in the school yard I had scr**ed my elbow on a concret wall. I was sitting in class with a bahroom tissue against it, when my teacher sent me to the school's infermary. I remember the nurse walking out of a side room and leaving the door half open. It was open enough to see a boy sitting up on the strecher bed completly naked. It was one of those moments that happen when you least expect it. I couldn't help looking at his penis seconds before he cover it with his hands. I remember looking at each other while the unaware nurse kept talking to her secretary. Didn't know witch of us was more embarrassed; me looking at him or him sitting there stark naked with his hands over his crotch. I remember he just sat there forzen with shame and really nothing that he could do about it. Could never figure out what his problem or the need to be totally undressed. I even thought the nurse was making boys get undressed to get a perverted sexual thrill out of it. Any way I never said anything to save him from further embarrassment, but we both know what happed I came to think about as the sexiest moment that ever happed to me in school.