There are some societies where men or women have a separate language--actually, "register" may be a better term--for ceremonies that are specific to that gender

There are some societies where men or women have a separate language--actually, "register" may be a better term--for ceremonies that are specific to that gender, like circumcision rituals and so on. Nigel Barley's memoir Ceremony tells about one of these, which has a Wikipedia entry here: https://en.m.wikipedia.org/wiki/La%27bi_language https://en.m.wikipedia.org/wiki/La%27bi_language