What Does Spanner Mean In Slang?
In British slang, “spanner” refers to a person who is considered foolish or unwise. It is used to describe someone who has made a mistake or has done something silly. The term is derived from the tool, a spanner, which is used to tighten and loosen bolts and nuts. The idea is that a spanner person is a person who is not very smart or capable and, as a result, is unable to fix things properly.