I don’t know about hexbears rules, but cunt (or c%%t to y’all) is just a dirty word for vulva, on par with dick or cock. UK folks use it as an insult pretty commonly, and Americans seem to have elevated to the Worst Word now, somehow replacing fuck (f%%k) as the supreme curse word.

A lot of woman reclaim it and use it as praise, like calling someone “cunty” to mean like “confident” and “motivated.” or to say someone is “serving cunt” is similar: being very powerful and confident in a femme way.

I do not think it is anti-trans, though I am a cis-man so this is second hand. The trans women I know and see, though, use phrases lie “serving cunt” frequently, particularly among each other. A bit of vulgar femme talk, “hanging with the girls” kind of language, I would think is actually quite reassuring and helps one to feel accepted as a woman.

Obviously, calling a trans-man “cunty” would be a very different kind of situation though, and i hope folks here can recognize that.