This idiom doesn’t involve actual rescue; it’s used for various kinds of help or assistance.

Metaphorical Use

Often used to express relief from serious trouble or a close call.

Intensity

Don't take it literally, nobody's neck is in danger; it’s about avoiding negative consequences.

Often expresses gratitude for small favors among friends or close colleagues.

The term carries a light-hearted, informal tone, suitable for casual conversation.

Implies timely help that avoids more than just inconvenience, sometimes serious issues.