What is the origin of the idiom "till someone drops" and when to use it?

The origin of the idiom "till someone drops" is rooted in the literal sense of physical exhaustion or collapse. It likely emerged from the idea of someone pushing themselves to the point of physical fatigue or collapse, suggesting a relentless pursuit or effort until one can no longer continue. The phrase is often used to describe situations involving physical exertion, such as sports, endurance activities, or demanding physical tasks.