Cách sử dụng
The expression "go postal" is used to describe someone who becomes extremely angry and violent, especially in a workplace setting. This phrase originated from a series of deadly shootings that occurred at US Post Offices in the 1980s and 1990s. It is not a polite or positive expression, and is generally used to convey a sense of danger or instability. It is not a phrase that should be used casually or lightly.