PEBCAK

• PEBCAK = “Problem Exists Between Chair And Keyboard.”

  • It’s informal IT/helpdesk slang used to indicate that the issue isn’t with the system, but with the user.

  • Origin

    • Emerged in 1990s IT and tech support culture, especially among sysadmins and helpdesk workers.
    • Part of a broader family of humorous “user error” acronyms (e.g., ID10T error, PICNIC).
    • No single documented inventor; it spread organically through:
      • early Usenet groups
      • internal corporate IT jargon
      • later forums like Slashdot and similar communities

    • Variants

      • PEBKAC (more common spelling)
      • PEBCAK
      • Same meaning, different letter order conventions

    • Related terms

      • PICNIC: Problem In Chair, Not In Computer
      • ID10T error: “idiot error” disguised as a code