"all my eye" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "all my eye (uncountable)",
      "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"
        }
      ],
      "examples": [
        {
          "text": "1849 October, \"The Green Hand--A 'Short' Yarn. Part V\", in Blackwood's Edinburgh Magazine, vol. LXVI, American ed., vol. XXIX no. 4, page 440,\nThat 'ere talk o' yours, Harry, consarnin' dazarts and what not--why, bless me, it's all my eye,--...."
        },
        {
          "text": "1883, Anthony Trollope, Mr. Scarborough's Family, chap. 25,\n\"I suppose you mean to say that he has given orders that I am not to be admitted?\"...\n\"Oh, Mr. Harry, you shouldn't ask me, as is merely a servant.\"\n...\"That's all my eye, Matthew; you know all about it as well as any one. It is so. He does not want to see me.\""
        }
      ],
      "glosses": [
        "rubbish, humbug"
      ],
      "id": "en-all_my_eye-en-noun-nSXYCRFG",
      "links": [
        [
          "rubbish",
          "rubbish"
        ],
        [
          "humbug",
          "humbug"
        ]
      ],
      "raw_glosses": [
        "(dated) rubbish, humbug"
      ],
      "synonyms": [
        {
          "word": "all my eye and Betty Martin"
        }
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    }
  ],
  "word": "all my eye"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "all my eye (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English dated terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "text": "1849 October, \"The Green Hand--A 'Short' Yarn. Part V\", in Blackwood's Edinburgh Magazine, vol. LXVI, American ed., vol. XXIX no. 4, page 440,\nThat 'ere talk o' yours, Harry, consarnin' dazarts and what not--why, bless me, it's all my eye,--...."
        },
        {
          "text": "1883, Anthony Trollope, Mr. Scarborough's Family, chap. 25,\n\"I suppose you mean to say that he has given orders that I am not to be admitted?\"...\n\"Oh, Mr. Harry, you shouldn't ask me, as is merely a servant.\"\n...\"That's all my eye, Matthew; you know all about it as well as any one. It is so. He does not want to see me.\""
        }
      ],
      "glosses": [
        "rubbish, humbug"
      ],
      "links": [
        [
          "rubbish",
          "rubbish"
        ],
        [
          "humbug",
          "humbug"
        ]
      ],
      "raw_glosses": [
        "(dated) rubbish, humbug"
      ],
      "tags": [
        "dated",
        "uncountable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "all my eye and Betty Martin"
    }
  ],
  "word": "all my eye"
}