@oristarA,
oristarA wrote:Does it literally refer to "a small building, usually made of wood, used for storing things"?
Probably.
Quote:For the former, a middle class guy would usually not care to mention.
Why not? You are mistaken. In Britain, to my knowledge, lots of people of all classes have sheds, and are not ashamed to mention them. Many people (mainly men) are fans of sheds and will eagerly discuss them. It is like being a fan of cars, boats, lawns, plants, trees, whatever. Male hobby interest. In the famous Monty Python comedy series, there was a character who had two sheds, called Arthur "Two Sheds" Jackson. Thus listing a shed alongside family members etc may be seen as semi-jocular.
My shed is like this, but not so clean looking.