I recently had a bit of trouble finding the restroom at one of my favorite restaurants. The restaurant is Coda in Boston's trendy Back Bay neighborhood. They have two restrooms in the back with doors labelled WC. I discovered later that WC stands for water closet. Both restrooms have the same design -- a sink and a sit-down toilet bowl -- and are, therefore, gender-neutral. If one of the two restrooms happens to be occupied, you can simply walk into the other one regardless of your gender. And each restroom is single occupancy, i.e. no sharing. I believe this design also alleviates the problems faced by homosexuals and transgender individuals who occasionally get challenged when using gender-specific restrooms. According to Wikipedia, "The water closet was the original term for a room with a toilet, since the bathroom was where one was to take a bath. This term is still used today in some places, but might be a room that has both toilet and bath. Plumbing manufacturers often use the term to delineate toilets from urinals." By the way, Coda is highly recommended for good food, drink, and service.