No, that's not quite what I mean. It's much simpler than that.
Basically, if a woman isn't interested in a bloke she will either ignore him or be nice to him in a friendly sort of a way.
If she takes the trouble to insult him, she's interested. Maybe not very interested, but at least a bit.
If she insults him using any of the following adjectives: narcissistic, egotistical, arrogant etc., she is very interested indeed and basically in the bag unless you make some kind of serious blunder.
Although why I'm giving away this invaluable advice for free escapes me to be honest.