Submitted by György Chityil ... on Fri, 01/19/2018 - 22:28 Hierarchy: VerbDescription: {{intransitive|chiefly|US|informal}} To behave in a hysterical, angry or irrational manner.Ngram: go postalNgram Text: go postalSource: WiktionaryIssue: 0Wiktionary tag: chieflyNgram Count: 2