I think I may have passed yesterday. I wasn't going out of my way to present as male, but I didn't have any particularly feminine markers either. When the guy asked for my name, I gave my birth name, Kim. (I was with a friend of mine to whom I am not out.) When I picked up our drinks, the guy called out "Tim." I'm not sure if the guy mistyped it, mixed it up with another customer, or something else, but I like to think that I may have really passed after talking to a stranger. It made my day either way.