We all do this. Women do this with men. He's a man. Men do this with women. She's a woman.
All groups have such codes.
Hockenberry deplores the non-sharing of codes, suggesting that this contributes to stereotyping and discrimination. Only by sharing our perceptions can we remove the adversarial affect of members vs. non-members. The resort to codes of silence wihtin outsider groups is a form of separate knowing. Status bestows power on those who have it. That power often results in authority, and in power over others.