Trick to Flirting

A wise guy once told me the trick to get any guy is "just be a little flirty, but not the over-the-top Adams Morgan style flirty (meaning that the girl would lay everything out there like a piece of fruit waiting for a buyer). Instead the flirting must be slightly dangerous, more subtle, keep-your-distance-or-you-might-get-burned style."

now - can someone interpret that for me? just exacltly how to do the
a) slightly dangerous
b) more subtle
c) keep-your-distance-or your might get burned

seems like a lot of steps to me.....