To me the word "Vacant", means "come on in, nobody in here, you are free to enter this empty space." So when I went to crack open the single bathroom door of the coffee shop that I was in, I was surprised to find a middle aged Japanese lady in a situation that most people would desire privacy for. She blurted something out in japanese, which probably translated to, "shut the stinkin door!"
Fortunately for both us, we never saw each other's faces. So after shutting the door I ran back to my table, buried my face in my laptop and pretended like I was there the whole time working. I made sure not to make any eye contact with her as she walked passed me. (btw, the picture below is a re-enactment).