so, when a null character has a bulge roughly the position and size of where balls and penis would go we call that null_bulge. similar to how bulge works, except their anatomy is just like that, rather than it being something under clothes.
I don't think I've come across any cases of this, but what would we call the tag for the other case? like, I don't think we have a tag for when a character's body just has the vague topography of the labia majora between their legs but no hole. under clothes it's called camel_toe... so, would it be, like uhh... camnull_toe?