BDSM for the teeth. You know you're into kinky shit when you get braces.
Friend 1: "Yo I just got braces. Man, they suck."
Friend 2: "Oh... I see you're into orthodontics."
Friend 1: "No! It's just that my teeth need to be straightened."
Friend 2: "Sure, man. It's 2019. We don't kink shame. And your teeth can be as gay as they want."
Not transgender. That is, having the socially expected gender identity for the sex one was assigned at birth. Used in preference to the word cisgender which many orthogender peoplereject as being applied to them by other groups.
Sarah always asked people to respect her self identity and use the term orthogender.