"rule of cool" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "The principle that anything is acceptable to do, use, wear etc. just as long as it is cool."
      ],
      "id": "en-rule_of_cool-en-noun-U3lWpCyx",
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          "principle",
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        [
          "cool",
          "cool"
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      ]
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  "word": "rule of cool"
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  "lang_code": "en",
  "pos": "noun",
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        "The principle that anything is acceptable to do, use, wear etc. just as long as it is cool."
      ],
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        [
          "principle",
          "principle"
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        [
          "cool",
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  "word": "rule of cool"
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