Some years ago, my friends and I were in a dimly light bar that I never had been to, and I was living in the bottom of the bottle that night, and every time I had to go to the bathroom, they kept telling me "It's the first door on the right", so naturally, I kept going in the first door on the right. Needless to say, I used the womens rest room about 4 times without realizing it before the female bartender had to come out and show me to the mens room. In my defense, the mens and womens rest rooms in this place are exactly the same. It was quite embarrassing, but we all struck up a friendship with her, and that became our "regular" bar to go to.