Definition & Meaning of "hello stranger"

What is the origin of the idiom "hello, stranger" and when to use it?

The idiom "hello, stranger" comes from the friendly greeting one might use when encountering someone they haven't seen in a while or someone who has been absent for an extended period. It's a way of acknowledging the person's return and showing warmth and surprise at their reappearance, often with a touch of playfulness. This phrase is used in casual, informal settings to re-establish a connection with someone who has been out of touch or absent for some time.