I'm sitting at a table in a place I play regularly. Another regular -- entirely too regular, I have begun to realize -- is also there, and is sitting near me...again. He's trying to be conversational, but I'm feeling suspicious and resist the effort.
He makes a comment about the low likelihood of success in what he seems to think is my betting scheme.
Trying to chat me up, while simultaneously tracking my bets?
In fact, I'm not doing anything remotely like he thinks I am. But on the off chance that he's casino personnel and assigned to watch, I'm pleased as can be that he has badly mis-analyzed my play, which may have coincidentally appeared to be something other than what it actually is.
In all likelihood, I'm probably just paranoid. But the paranoid live longer.