why would some people call their friends "bitch" in face to show intimacy? i feel really uncomfortable and don't get it at all. if we take the word at face value, either "female bully" or "promiscuous woman" is inappropriate in a friendly context. i also feel very uneasy, when people, especially women, put this "female bully" label on themselves proudly as if this indicates their assertiveness and strongness. so boring and infantile.
i would say try to focus more on the words you do want to use than the words you don't