"bla bla jólakaka" meaning in All languages combined

{
  "etymology_text": "Nonsensical rhyming of bla bla (“blah blah”) (imitating nonsense chatter) with jólakaka.",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "phrase"
      },
      "expansion": "bla bla jólakaka",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic 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"
        }
      ],
      "glosses": [
        "“what nonsense!” (shows that the speaker believes some discussion is meaningless or without substance)"
      ],
      "id": "en-bla_bla_jólakaka-is-phrase-JY3qJ1TD",
      "raw_glosses": [
        "(informal) “what nonsense!” (shows that the speaker believes some discussion is meaningless or without substance)"
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "bla bla jólakaka"
}

{
  "etymology_text": "Nonsensical rhyming of bla bla (“blah blah”) (imitating nonsense chatter) with jólakaka.",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "phrase"
      },
      "expansion": "bla bla jólakaka",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Icelandic entries with incorrect language header",
        "Icelandic informal terms",
        "Icelandic lemmas",
        "Icelandic multiword terms",
        "Icelandic phrases",
        "Pages with 1 entry"
      ],
      "glosses": [
        "“what nonsense!” (shows that the speaker believes some discussion is meaningless or without substance)"
      ],
      "raw_glosses": [
        "(informal) “what nonsense!” (shows that the speaker believes some discussion is meaningless or without substance)"
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "bla bla jólakaka"
}