>>511157712 (OP)They're always doing something fucking stupid with their hands. Every waking minute of every hour of every day. Whether it's rubbing them together, flashing gang signs, making finger guns and pretending to shoot people (very popular now), holding or pulling their pants up, holding a gun in their waistband, or "dancing" which typically includes all of the above, it's always something. It's partly an impulse control problem, they can't not do it. It's partly an ego and vanity problem, they think it makes them look cool. Partly a fear response, they think it makes them look more intimidating and so less likely to be preyed on. And partly because they're just fucking stupid.
>>511158956Not the post you're talking about, but that's Bicameral Mind Theory in a nutshell.