"da mo" meaning in Italian

{
  "forms": [
    {
      "form": "da mo !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "da mo",
      "name": "it-adv"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Central-Southern Italian",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian requests for English equivalent term",
          "parents": [
            "Requests for English equivalent term",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "it",
          "name": "Time",
          "orig": "it:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Da quando? — Da mo!",
          "type": "example"
        },
        {
          "text": "Quelli da mo che si conoscono!",
          "type": "example"
        }
      ],
      "glosses": [
        "since a very long time ago, for ages"
      ],
      "id": "en-da_mo-it-adv-xF-Uv~st",
      "links": [
        [
          "ironic",
          "irony"
        ]
      ],
      "qualifier": "central-southern Italy",
      "raw_glosses": [
        "(central-southern Italy, originally ironic) since a very long time ago, for ages"
      ],
      "synonyms": [
        {
          "word": "da sempre"
        }
      ]
    }
  ],
  "word": "da mo"
}

{
  "forms": [
    {
      "form": "da mo !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "da mo",
      "name": "it-adv"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Central-Southern Italian",
        "Italian adverbs",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian multiword terms",
        "Italian requests for English equivalent term",
        "Italian terms with usage examples",
        "Requests for translations of Italian usage examples",
        "it:Time"
      ],
      "examples": [
        {
          "text": "Da quando? — Da mo!",
          "type": "example"
        },
        {
          "text": "Quelli da mo che si conoscono!",
          "type": "example"
        }
      ],
      "glosses": [
        "since a very long time ago, for ages"
      ],
      "links": [
        [
          "ironic",
          "irony"
        ]
      ],
      "qualifier": "central-southern Italy",
      "raw_glosses": [
        "(central-southern Italy, originally ironic) since a very long time ago, for ages"
      ],
      "synonyms": [
        {
          "word": "da sempre"
        }
      ]
    }
  ],
  "word": "da mo"
}