"midsummer madness" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "c. 1601–1602 (date written), William Shakespeare, “Twelfe Night, or What You Will”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act III, scene iv]:",
          "text": "Why this is very midsummer madness.",
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          "ref": "1959, Isaac Asimov, “All the Troubles of the World”, in Nine Tomorrows: Tales of the Near Future, →OCLC, page 160:",
          "text": "\"Madness. Midsummer madness,\" muttered Gulliman.",
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      "glosses": [
        "Madness attributable to the heat of summer, or to the midsummer moon."
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      "id": "en-midsummer_madness-en-noun-DTHrCJ3A",
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          "midsummer moon",
          "midsummer moon"
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  "word": "midsummer madness"
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  "lang_code": "en",
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          "text": "Why this is very midsummer madness.",
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          "ref": "1959, Isaac Asimov, “All the Troubles of the World”, in Nine Tomorrows: Tales of the Near Future, →OCLC, page 160:",
          "text": "\"Madness. Midsummer madness,\" muttered Gulliman.",
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      "glosses": [
        "Madness attributable to the heat of summer, or to the midsummer moon."
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          "midsummer moon",
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  "word": "midsummer madness"
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