Useful English Word or Phrase to Boost Your English: Smash Your Lights Out
What does it mean?
Smash your lights out - a threat to punch someone so hard they lose consciousness ("lights out").
Is it positive or negative?
All of these are intensely negative. They are aggressive, threatening, and inappropriate in almost every situation.
When do you use it?
These phrases appear only in extremely aggressive confrontations or in very rough joking contexts (which is still risky). They should not be used in normal conversation.
Example
Example: "If you don't calm down, I'm going to smash your lights out." ( This is an aggressive threat, not suitable for polite conversation.)
Question for you
Why do you think people use aggressive slang like this when arguing?
Are you looking for English speaking practice online?
A phrase like "Smash Your Lights Out" can make you sound more natural straight away. I teach practical speaking in online English lessons with a British native speaker, so you know when and how to use it. You can also explore Smashed It. Find out more here.