Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • verb intransitive, informal To behave in a hysterical, angry or irrational manner.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

go (in the sense "become") + postal; from a rash of incidents, mostly gun violence, perpetrated by disgruntled U.S. Postal Service workers on co-workers in the United States, beginning in the 1980s (see quotations)

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Examples

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  • To mail oneself.

    June 29, 2008