I was at Mountain Warfare training in the Sierra Nevadas once. We had just come down from 9494 (a nickname for a mountain we trained on at that elevation) and were hitting the showers at the base camp with the unit of grunts we had been training with for almost a month, when a Marine came up to me and said, "Hey Doc, can you take a look at my foot? I've got a hell of a blister...". He leaned up against the shower wall next to me to show me his problem. Since I was trying to take a freakin' shower at the time, I told him to get the hell away, I was no Corpsman, and "Doc" was just a nickname (apparently, he had heard my buddies calling me Doc all the time and made the wrong assumption). I'm just glad all he wanted me to look at was a foot problem!
LOL. He was living dangerously.