I'm fascinated by the current video on twitter of the man ripping his wig off and the body Language.
In the first part it seems to me that there's lots of pointing and subtly aggressive body language, then he'll remember he's supposed to be one of the most vulnerable people on the planet and his body language changes to more submissive, fluttering of the eyes, looking up thru eyelashes , clasping of hands. There's already an incongruence there between how he wants to come across and what leaks out when he can't maintain the act.
It's this sort of incongruence that often our spidey senses pick up long before we're conscious of it that we're being asked to ignore.
Why do so many fall for it though? Or are they just better at over riding any sort of warning system?