I have two experiences with this.
Once, right b4 I got my tonsiles cut out, I was in the room and a nurse gave me a shot IN my mouth. I passed out. While out the nurses pulled my pants down and gave me a shot in my ass. I felt pretty cool about it. I always wondered if they pulled on it to help roll me over. :rofl;
Another time a nurse was checking my lymph nodes down there. She kept pressing around and I ended up gettin' a chubby. She knew it too. I couldnt help it. She left and here comes a male nurse.