# punch someone's lights out

idiom

Source: https://englishreference.com/idiom/punch-someones-lights-out
Updated: 2026-08-10

## Meaning

To give someone a serious beating using one's fists; to punch someone until he or she is unconscious.

## Examples

- The angry man threatened to punch his lights out.
- After the stranger insulted his family, he felt so furious that he wanted to punch his lights out.
- The bully kept pushing the quiet student until the boy finally snapped and threatened to punch his lights out right there in the hallway.
- The tension in the room grew until the larger man warned that if he heard another word, he would punch his lights out.

## Origin

The expression relies upon the metaphor of extinguishing a source of illumination, such as a lamp, lantern, or candle. By snuffing out the light, one renders the immediate environment dark; by punching another person's lights out, one achieves a similar effect for the recipient. A secondary interpretation involves the biological machinery of vision. The light in question may refer to sightedness or the eyes themselves, which close upon the onset of unconsciousness. This shift from external flame to internal vision mirrors the figurative logic found in the phrase by one's lights.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.