30 years ago it was the same. Omigod omigod omigod!
They have evolved to be social operators, that means picking up "the norm" and running with it is what they do.
It comes from Paleolithic times when women cooked and crafted and raised the children while men hunted mammoths. Her ticket to power and influence is in being big chief Chad's main bitch.
They have to have a way of keeping the other bitches close so that they won't stab her in the back and take Chad. And also, at the same time, have a shared social language and way of acting, which she can use to create a hierarchy of bitches in which she is the top bitch because she plays that game more powerfully than the other lesser bitches.