"metal mouth" meaning in English

{
  "forms": [
    {
      "form": "metal mouths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metal mouth (plural metal mouths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1997, Jean Lee, Coping With Braces and Other Orthodontic Work, page 1:",
          "text": "In fact, wearing braces is such a common experience today that the social stigma once attached to it (\"Hey, metal mouth!\") hardly exists anymore.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A person who wears orthodontic braces."
      ],
      "id": "en-metal_mouth-en-noun-vC5WjIpY",
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "orthodontic",
          "orthodontic"
        ],
        [
          "braces",
          "braces"
        ]
      ],
      "raw_glosses": [
        "(slang, derogatory) A person who wears orthodontic braces."
      ],
      "tags": [
        "derogatory",
        "slang"
      ]
    }
  ],
  "word": "metal mouth"
}

{
  "forms": [
    {
      "form": "metal mouths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metal mouth (plural metal mouths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English derogatory terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1997, Jean Lee, Coping With Braces and Other Orthodontic Work, page 1:",
          "text": "In fact, wearing braces is such a common experience today that the social stigma once attached to it (\"Hey, metal mouth!\") hardly exists anymore.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A person who wears orthodontic braces."
      ],
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "orthodontic",
          "orthodontic"
        ],
        [
          "braces",
          "braces"
        ]
      ],
      "raw_glosses": [
        "(slang, derogatory) A person who wears orthodontic braces."
      ],
      "tags": [
        "derogatory",
        "slang"
      ]
    }
  ],
  "word": "metal mouth"
}