"Rule 63" meaning in English

{
  "etymology_text": "Rule 63 was first introduced as part of the expanded edition of Anonymous’ Rules of the Internet, most likely published in the summer of 2007, based on Google Insights. The Urban Dictionary entry for “Rule 63” was first submitted by user InternetHateMachine on August 8th, 2007.",
  "head_templates": [
    {
      "args": {
        "head": "Rule 63"
      },
      "expansion": "Rule 63",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English 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"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Fandom",
          "orig": "en:Fandom",
          "parents": [
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The proposition that it is possible to find genderswapped versions of every fictional character, especially as fan art on the internet."
      ],
      "id": "en-Rule_63-en-name-~22VOM9C",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "fandom",
          "fandom"
        ],
        [
          "proposition",
          "proposition"
        ],
        [
          "genderswap",
          "genderswap"
        ],
        [
          "character",
          "character"
        ],
        [
          "fan art",
          "fan art"
        ],
        [
          "internet",
          "internet"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, fandom slang, informal) The proposition that it is possible to find genderswapped versions of every fictional character, especially as fan art on the internet."
      ],
      "related": [
        {
          "word": "Rule 34"
        }
      ],
      "tags": [
        "Internet",
        "informal",
        "slang"
      ],
      "topics": [
        "lifestyle"
      ]
    }
  ],
  "word": "Rule 63"
}

{
  "etymology_text": "Rule 63 was first introduced as part of the expanded edition of Anonymous’ Rules of the Internet, most likely published in the summer of 2007, based on Google Insights. The Urban Dictionary entry for “Rule 63” was first submitted by user InternetHateMachine on August 8th, 2007.",
  "head_templates": [
    {
      "args": {
        "head": "Rule 63"
      },
      "expansion": "Rule 63",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "Rule 34"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English fandom slang",
        "English informal terms",
        "English internet slang",
        "English lemmas",
        "English multiword terms",
        "English proper nouns",
        "English terms spelled with numbers",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Fandom"
      ],
      "glosses": [
        "The proposition that it is possible to find genderswapped versions of every fictional character, especially as fan art on the internet."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "fandom",
          "fandom"
        ],
        [
          "proposition",
          "proposition"
        ],
        [
          "genderswap",
          "genderswap"
        ],
        [
          "character",
          "character"
        ],
        [
          "fan art",
          "fan art"
        ],
        [
          "internet",
          "internet"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, fandom slang, informal) The proposition that it is possible to find genderswapped versions of every fictional character, especially as fan art on the internet."
      ],
      "tags": [
        "Internet",
        "informal",
        "slang"
      ],
      "topics": [
        "lifestyle"
      ]
    }
  ],
  "word": "Rule 63"
}