"everyone and their mother" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "pronoun"
      },
      "expansion": "everyone and their mother",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English plural pronouns",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pronouns",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "2011, “Now Everyone And Their Mother Is Shorting China, Especially These Four Stocks”, in Business Insider:",
          "type": "quotation"
        },
        {
          "ref": "2007, Hot Fuzz",
          "roman": "DS Andy Cartwright: Everyone and their mums is packin' round here!",
          "text": "DS Andy Wainwright: You do know there are more guns in the country than there are in the city.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A large number of people; most people."
      ],
      "id": "en-everyone_and_their_mother-en-pron-iNtWr3gJ",
      "raw_glosses": [
        "(idiomatic) A large number of people; most people."
      ],
      "related": [
        {
          "word": "and his mother"
        }
      ],
      "synonyms": [
        {
          "word": "everyone and their grandma"
        },
        {
          "word": "everybody and his mother"
        },
        {
          "word": "everyone and his mother"
        }
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "everyone (hyperbolically)",
          "word": "varenda kotte"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "everyone (hyperbolically)",
          "word": "varenda käft"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "everyone (hyperbolically)",
          "word": "varenda jävel"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "everyone (hyperbolically)",
          "word": "fan och hans moster"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-everyone and their mother.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/01/En-au-everyone_and_their_mother.ogg/En-au-everyone_and_their_mother.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/01/En-au-everyone_and_their_mother.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "everyone and their mother"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "pronoun"
      },
      "expansion": "everyone and their mother",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "pron",
  "related": [
    {
      "word": "and his mother"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English plural pronouns",
        "English pronouns",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "text": "2011, “Now Everyone And Their Mother Is Shorting China, Especially These Four Stocks”, in Business Insider:",
          "type": "quotation"
        },
        {
          "ref": "2007, Hot Fuzz",
          "roman": "DS Andy Cartwright: Everyone and their mums is packin' round here!",
          "text": "DS Andy Wainwright: You do know there are more guns in the country than there are in the city.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A large number of people; most people."
      ],
      "raw_glosses": [
        "(idiomatic) A large number of people; most people."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-everyone and their mother.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/0/01/En-au-everyone_and_their_mother.ogg/En-au-everyone_and_their_mother.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/0/01/En-au-everyone_and_their_mother.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "everyone and their grandma"
    },
    {
      "word": "everybody and his mother"
    },
    {
      "word": "everyone and his mother"
    }
  ],
  "translations": [
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "everyone (hyperbolically)",
      "word": "varenda kotte"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "everyone (hyperbolically)",
      "word": "varenda käft"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "everyone (hyperbolically)",
      "word": "varenda jävel"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "everyone (hyperbolically)",
      "word": "fan och hans moster"
    }
  ],
  "word": "everyone and their mother"
}