Lol, one time I went to donate blood at my HS to get out of class/see if I could run after. I was he'd until the lady saw my ID (damn it, undeniably female names) and started using female pronouns. I passed to the other ladies and the guy who brought towels/red betadine/whatever and so it was funny, some were using female pronouns and most using male and nobody seemed to notice the conflict. It was cool, I wasn't even binding that day.
Being TS is a mindf*** on its own though.