It’s #dont-say-yes-or-no, but the banned words are “he”, “him”, “his”, “she”, “her”, “they”, “them”, “their”, “it”, and “its” instead. Just like #dont-say-yes-or-no, the idea is to accidentally use it when you’re not paying attention, so “hes” and “h+es” and other silly jokes like that would be allowed.