
Brass monkeys
Colloquial Usage
Used informally among friends or in casual conversations, not in formal settings.

You'll need a warmer coat today; it's brass monkeys out there!
British Origin
This phrase is most common in the UK and may not be understood elsewhere.

Visiting London in January was quite an experience, especially with the brass monkeys weather.
Seasonal Reference
Most relevant in winter or cold periods; doesn't make sense to use in a warm context.

Couldn't believe how brass monkeys it was during the football match.
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