"do someone's dags" meaning in English

{
  "etymology_text": "From darings.",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "do someone's dags pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1880, Our Boys' Paper (page 411)",
          "text": "\"Can you climb?\" asked Gale of Joe.\n\"Like a monkey.\"\n\"Of course,\" said Gale, drily, \"very much like a monkey.\"\n\"That's one to you; but I can do your dags.\"\n\"You can't.\"\n\"I can — anybody's dags. Look here.\""
        },
        {
          "ref": "1914, William De Morgan, When Ghost Meets Ghost (page 575)",
          "text": "[…] do his dags for him, Billy would, if he could get at him. Wouldn't you, Billy?"
        }
      ],
      "glosses": [
        "To defy someone by doing something that they are unable to do."
      ],
      "id": "en-do_someone's_dags-en-noun-GZ2r0uU~",
      "links": [
        [
          "defy",
          "defy"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) To defy someone by doing something that they are unable to do."
      ],
      "tags": [
        "UK",
        "obsolete",
        "plural",
        "plural-only",
        "slang"
      ]
    }
  ],
  "word": "do someone's dags"
}

{
  "etymology_text": "From darings.",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "do someone's dags pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "English slang",
        "English terms with obsolete senses",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1880, Our Boys' Paper (page 411)",
          "text": "\"Can you climb?\" asked Gale of Joe.\n\"Like a monkey.\"\n\"Of course,\" said Gale, drily, \"very much like a monkey.\"\n\"That's one to you; but I can do your dags.\"\n\"You can't.\"\n\"I can — anybody's dags. Look here.\""
        },
        {
          "ref": "1914, William De Morgan, When Ghost Meets Ghost (page 575)",
          "text": "[…] do his dags for him, Billy would, if he could get at him. Wouldn't you, Billy?"
        }
      ],
      "glosses": [
        "To defy someone by doing something that they are unable to do."
      ],
      "links": [
        [
          "defy",
          "defy"
        ]
      ],
      "raw_glosses": [
        "(UK, slang, obsolete) To defy someone by doing something that they are unable to do."
      ],
      "tags": [
        "UK",
        "obsolete",
        "plural",
        "plural-only",
        "slang"
      ]
    }
  ],
  "word": "do someone's dags"
}