How do you flirt?

[Elspode]

I am clueless. I need my wife to tell me when a woman is coming on to me most of the time. There are rare exceptions, but mostly, I've *always* found it inconceivable that a woman might be interested in me.

Nevertheless, my wife assures me that I *do* flirt, but frankly, I'm almost always unaware of it. It seems that my style of flirtation, according to her, consists of actually paying attention to what a woman is saying, responding with a smile or some appearance of unfeigned interest, and a bit of body language. I can only assume she means when I grab my crotch, or do the index finger going in and out of the thumb and index finger circle formed by my other hand...