As I understand it, Sumerian culture had drinking establishments. Though they don't seem to have been freestanding business establishments, and were often part

As I understand it, Sumerian culture had drinking establishments. Though they don't seem to have been freestanding business establishments, and were often part of some larger organization (like a temple). So "bar" would be an updated translation that preserves the essence of an idea of walking into a drinking place, but obviously a lot of the cultural nuance around the social role of a Sumerian tavern is lost. It doesn't really seem important for this joke though.