Alan,
You posted a 5:30 in the morning. Had you been up all night? Had coffee? Yes, there a myriad cues we see and react to within language and beyond, consciously and subliminally. Of course you know that. And yes we do surpress some information willfully.
When we meet a new person with an agenda, theirs or ours, the situation is weighted and the weight itself may be intolerable often resulting in rudeness, or even giggling.
Walker Percy in Lost in the Cosmos asks if you were really interested in getting to know a woman would you rather meet her on a moonlit Mediteranian veranda with live chamber music or under a table during the blitz as the ceiling falls down.
My test for two gals was to take them boating in a shallow river and overturn the boat. I wanted to see how they handled it and they could forgive me. They did pretty well and weren't too hard on me so I married them. Or they married me, I am still unclear about that. Anyway, not at the same time. Now after 40 years of marriage and single again I have some doubts about this tactic.
Cary Grant was once asked by an interviewer about the popularity of his screen persona. He said Yes, everybody wants to be Cary Grant. Even I want to be Cary Grant. Sure, its OK to put your best foot forward, but not so far you strain yourself.
My great, great cousin Thomas Read was a pegleg prosecuting attorney in Hinton West Virginia. He was tall and chewed tobacco.
Called to dinner, he would take out his chaw and put it on the cornice over the door to the dining room as he went in.
My bride at the time was revolted by this and asked his wife about it. She didn't miss a beat, she looked right up and said. 'He's the dearest man I ever met.'
I'm not say you necessarily ought to take up chewin tobacco, or boating for that matter. Just that gettin' along with folk, women in particular, requires cuttin' some slack. And don't ever suppose that they don't know it.