Used metaphorically for the rapid decrease or ending of something.

Metaphoric Extinction

Doesn't always mean death; can refer to dropping out or rapid decline.

Not Literal

Often used to exaggerate a situation for effect, not to be taken literally.

Highlights the quickness and mass aspect of people or things leaving.

Can be neutral, just describing a quick dispersal, not necessarily due to a bad event.

Creates a vivid image; used more in casual conversation than formal writing.

Conveys the idea of people being physically overpowered or worn out.

Used to stress the severity of exhaustion or the impact of an intense activity.

The phrase can underscore the suddenness of the event leading to collapse.