I recently had a soft 18 v dealer 10. I hit it and drew a 6, then a face to bust. The dealer flipped a six, and hit a 5 to complete her 21. Since I was at third base, she thought that she would point out to the other 4 players at the table (and the 3 spectators in earshot) that I had foolishly hit an 18 and had single handedly screwed the whole table.
Since she was nice enough to bring it up, I told the dealer that I had a hunch she had a ten in the hole, and I always just play on instinct anyway.
Just then, one of the ploppy spectators leaned over me and very loudly said "hitting soft 18 versus a dealer 10 is the absolute correct play". This started a lengthy (5-10 minute) discussion among the spectators where my "hero" began explaining basic strategy and the probabilities associated with the Soft 18 v 10 play. I just ignored him.
I played 2 more hands, then colored up (showing a healthy loss) and left. From my viewpoint, the helpful ploppy had blown my cover as a hunch player who was ignorant of BS, much less counting, and had drawn attention to me with his loud comments. In retrospect, I probably should have handled this differently since I try to act like a ploppy as much as possible and a ploppy probably would have been happy that there was at least one person who didn't think he was a complete moron. I am pretty sure that the dealer did not suspect me of being a counter, since she was questioning my play.