OUT: I AM STRONG, I AM INVINCIBLE. IN: BOYS HAVE COOTIES! Duke sorority council bans events with male groups. “According to a post on the Duke Panhellenic Association’s Instagram page, the Panhellenic Council voted to ban mixers with all-male organizations to focus on women’s empowerment. The post states that all-male organizations cause concern amongst other groups due to gender dynamics and the objectification of women.”