Definition & Meaning of "[stand|stick] out a mile"

What is the origin of the idiom "stand out a mile" and when to use it?

The idiom "stand out a mile" originated from the literal sense of distance and visibility. The phrase signifies something or someone that is highly conspicuous, noticeable, or easily distinguishable from a considerable distance, akin to an object or person that stands out prominently from a mile away. This idiomatic expression is commonly used to describe situations where someone or something is extremely obvious or conspicuous, often implying that their distinctiveness is readily apparent to everyone.