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go postal

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go postal

to suddenly become violent or angry I don't think anybody is going to come in to work and go postal on me.

Etymology: based on an event in which an employee of the US Postal Service shot and killed other workers

See also: postal

go postal

  (American very informal)

to become very angry, or to suddenly behave in a violent and angry way, especially in the place where you work

Usage notes: This idiom started when a post office worker in America shot several of the people he worked with.

My Mom will go postal if I get home late. When she heard she'd been fired she went postal and started throwing things around the office.

See also: postal

go postal

in. to become wild; to go berserk. He made me so mad I thought I would go postal.

See also: postal

go postal

Slang To become extremely angry or deranged, especially in an outburst of violence.

See also: postal