Kind of, when I was about 7 or 8, I cracked my head open at school, and since my parents were quite a distance away at work,the child minder had to come get me, she obviously had to pick up my brother and her own kids from school, and by chance her policeman husband had just got off shift. He and his partner sat me in the back seat and took me up in the patrol car. Partner dropped him and me off. Now before then , I quite disliked this guy, he was a bit of an a$$hole at home if I remember,saw him slap his step daughter on the bottom ,slap her face but back then that wasn't a huge deal,but he seemed to really dislike her . Apparently he also got in some trouble for beating the shyt out of a speeding motorist... kept his job though...He was also racist according to my mum and had a black stepdaughter (long story...)
But he was totally great with me in A and E, because I was sat with a policeman so they might of thought I was in a childrens home or something happened to my parents , all these old ladies, kept on handing me money ,and this guy was well happy with our 'enterprise' while I was waitingto get my head stitched up. We bought quite a few treats if I remember.My mum still hadn't arrived when it came to get my head stitched,it was rather painful,but this guy probably the first time was pretty decent,. After he actually was alright with me, quite sad when my parents moved away as I missed him walking in all massive with the uniform saying 'have you been a good lad today?' letting me sit in the cop car.
Apart from that, nope. a few bad experiences, but you wanted good ones.