I don't remember exactly where I heard that term the first time... but the principle of it is money! There are a lot of threads / posts on the forums about it too.
But the subconscious psychological effect it has on a person is definitely solid. It's like giving someone something they want... and then taking it a way for a moment... and giving it back to them.
It creates a sense of value in a way, and flips all kinds of emotional switches.
Definitely a major part of good flirting & building attraction.
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Push Pull now which builds some good interest, separates myself from other guys, and makes the woman invest more. My eyes lit up T-Mal when I saw you told him to do the same thing.