Used to describe cold weather, this saying derives from the traditional Navy phrase "cold enough to freeze the balls off a brass monkey". This references the brass structure or 'monkey' where cannon balls were stacked.

"Cold enough to freeze the balls off (or on) a brass monkey" is a colloquial expression used by some English speakers to describe extremely cold weather. The Brass Monkey of Stanthorpe, Queensland, a place known for its "brass monkey weather", complete with a set of balls.

The Brass Monkey is a cocktail made with dark rum, vodka and orange juice, sold as a premixed cocktail in the 1970's and 80's. It was sold by the Heublein Company, which later dissolved in 1998.

Brass Monkey is a brand name of pre-mixed cocktails made by the Heublein Company. As with many lesser-known cocktails that are named after colloquial expressions, widely differing recipes share the same name. In the 1970s, '80s, and '90s, the Heublein Company produced the premixed cocktail labeled Brass Monkey.