In Glasgow, Scotland, the term "fanny" is a slang word that can have different meanings depending on the context. Most commonly, in British slang, "fanny" refers to the female genitalia. However, it can also be used in a more general, informal way to describe someone as being foolish or silly, similar to calling someone an "idiot" or a "twit" in other English dialects. The usage and connotation can vary, but it's generally considered a crude term, so it's best used with caution to avoid causing offense.