"wouldn't you know it" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "wouldn't you know it",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English discourse markers",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "name": "English rhetorical questions",
          "parents": [
            "Rhetorical questions",
            "Idioms",
            "Questions",
            "Sentences",
            "Figures of speech",
            "Multiword terms",
            "Terms by semantic function",
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            "Lemmas",
            "Language",
            "Communication",
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            "Fundamental"
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          "source": "w"
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          "parents": [
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          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Wouldn't you know it! I left my wallet at home.",
          "type": "example"
        }
      ],
      "glosses": [
        "Expresses dismay or annoyance, especially at misfortune."
      ],
      "id": "en-wouldn't_you_know_it-en-phrase-yljG8rnN",
      "links": [
        [
          "dismay",
          "dismay#English"
        ],
        [
          "annoyance",
          "annoyance#English"
        ],
        [
          "misfortune",
          "misfortune#English"
        ]
      ],
      "raw_glosses": [
        "(informal) Expresses dismay or annoyance, especially at misfortune."
      ],
      "synonyms": [
        {
          "word": "wouldn't you know"
        }
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "word": "wouldn't you know it"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "wouldn't you know it",
      "name": "head"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
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      "categories": [
        "English discourse markers",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English rhetorical questions",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with usage examples",
        "Translation table header lacks gloss"
      ],
      "examples": [
        {
          "text": "Wouldn't you know it! I left my wallet at home.",
          "type": "example"
        }
      ],
      "glosses": [
        "Expresses dismay or annoyance, especially at misfortune."
      ],
      "links": [
        [
          "dismay",
          "dismay#English"
        ],
        [
          "annoyance",
          "annoyance#English"
        ],
        [
          "misfortune",
          "misfortune#English"
        ]
      ],
      "raw_glosses": [
        "(informal) Expresses dismay or annoyance, especially at misfortune."
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "wouldn't you know"
    }
  ],
  "word": "wouldn't you know it"
}