"shock horror" meaning in English

{
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2008 July 14, Francesca Gavin, The Guardian",
          "text": "The identity of the secretive street artist has been outed by a Sunday newspaper and, shock horror, he's middle class.",
          "type": "quotation"
        },
        {
          "ref": "2012, Hugh Bicheno, “Spies of the Caribbean”, in Literary Review, section 401",
          "text": "The bulk of Castro's Secrets argues […] that Castro was aware that Lee Harvey Oswald was going to try to kill Kennedy in Dallas and (shock horror) did not warn the US authorities, ‘the most despicable decision during his nearly five decades in power’.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An expression of amazement at something controversial."
      ],
      "id": "en-shock_horror-en-intj-XnuuxHJr",
      "links": [
        [
          "ironic",
          "irony"
        ],
        [
          "controversial",
          "controversial#English"
        ]
      ],
      "raw_glosses": [
        "(now chiefly ironic) An expression of amazement at something controversial."
      ],
      "tags": [
        "ironic"
      ]
    }
  ],
  "word": "shock horror"
}

{
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English interjections",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2008 July 14, Francesca Gavin, The Guardian",
          "text": "The identity of the secretive street artist has been outed by a Sunday newspaper and, shock horror, he's middle class.",
          "type": "quotation"
        },
        {
          "ref": "2012, Hugh Bicheno, “Spies of the Caribbean”, in Literary Review, section 401",
          "text": "The bulk of Castro's Secrets argues […] that Castro was aware that Lee Harvey Oswald was going to try to kill Kennedy in Dallas and (shock horror) did not warn the US authorities, ‘the most despicable decision during his nearly five decades in power’.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An expression of amazement at something controversial."
      ],
      "links": [
        [
          "ironic",
          "irony"
        ],
        [
          "controversial",
          "controversial#English"
        ]
      ],
      "raw_glosses": [
        "(now chiefly ironic) An expression of amazement at something controversial."
      ],
      "tags": [
        "ironic"
      ]
    }
  ],
  "word": "shock horror"
}