뒷간 literally means a room in the back. Of course, it is not literally just another room it the back. This is an old way of saying toilet. When I was growing up, the older generations still used this word, but younger generation would never use it as it was considered somewhat uneducated/uncultured. This word also has a double meaning. A room in the back makes sense of course, but the back also implies “behind” or “hidden”. So essentially it double means as room in the back, but also means your behind so to speak.
If you look up what is toilet or restroom in Korean, you’d most likely encounter the word 화장실 (this is the proper word by the way). If you ever ask someone where 뒷간 is, someone my age would be able to tell you where it is (pointing to the restroom of course), but would also laugh at you (well, not to your face, but definitely when you are far enough away). I don’t think anyone who is younger than me would generally know what this word means unless they’ve watched historical drama.
So why the talk of toilets?
Well, let’s say the house I grew up in, which was properly inside the city limit of Seoul in a decent part of the city, had this so called 뒷간 until my teenage years. Needless to say, that experience left a lasting impression on me. It is the worst thing to have to go to the bathroom in the middle of the night, especially when it is below -10 degree Celsius in the winter. You have to not only bundle up, but also need to carry a light, then shuffle your way across the small courtyard to go to this literal hole in the ground. The hole is thankfully disguised minimally with attached porcelain squat toilet super structure, but you can still see the hole and if you are a child, you really have this giant fear of falling inside!
For those of you who wish to experience “authentic” old Korean, never fear, there are still places you can experience this for yourself.