Yeah. Title says it all. I'm pretty used to passing at a glance already, and I generally assume I'm being casually read as male, but this guy has heard me talk - in fact, I was just talking (in that high-pitched voice I can't help using when I'm being shy - I was offering my seat to an older lady in the class who couldn't see the board) just before he referred to me. And I'm pretty sure he knows my birth name. And he still used the right pronoun without hesitation.