Real-Life Weirdness

[Flyndaran]

Originally Posted by vicky_molokh

Ever noticed how the Sims seem to speak two slightly different languages based on sex of the speaker? It happens in real life too. When making up exotic cultures, such a case of fluency in two languages can be used to underscore that you're not in Kansas anymore. Or you can make a different line of division - caste, whether one was born during the waxing or waning moon, or even something as changing as age.

Reminds me of
https://en.wikipedia.org/wiki/N%C3%BCshu

A Chinese script only women invented/knew.

But spoken variants would make for interesting accidents for trans people.
Native speakers would likely feel that other languages hinder their natural masculinity/femininity by lacking such clear sexes.

Imagine slightly different languages for moods. One could have cultures that idolize cool logic, but using that form when showing strong signs of specific emotions is strongly discouraged. Or the opposite. Passionate people that reserve the calm language for unimportant subjects. I would and could only use that one for sports while a fan would use the excited form.