agree with The Human Rights Campaign Foundation, America’s largest LGBT lobbying group, regarding the preferred genital nouns? eg.
https://assets2.hrc.org/files/assets/resources/Trans_Safer_Sex_Guide_FINAL.pdf
DICK: We use this word to describe external genitals. Dicks come in all shapes and sizes and can belong to people of all genders.
FRONT HOLE: We use this word to talk about internal genitals, sometimes referred to as a vagina. A front hole may self-lubricate, depending on age and hormones.
STRAPLESS: We use this word to describe the genitals of trans women who have not had genital reconstruction (or “bottom surgery”), sometimes referred to as a penis.
VAGINA: We use this word to talk about the genitals of trans women who have had bottom surgery.