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...
Response from the site administrator
Dav999, 27.04.2017
Added as #dont-use-personal-pronouns, which seems to be closest to this - pronouns also include words like "something", "who", "each other" and "anyone".