"blanc comme un cul" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "white as an ass"
      },
      "expansion": "“white as an ass”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "white as an ass"
      },
      "expansion": "Literally, “white as an ass”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “white as an ass”.",
  "forms": [
    {
      "form": "blanche comme un cul",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "blancs comme des culs",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "blanches comme des culs",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "f": "blanche comme un cul",
        "fp": "blanches comme des culs",
        "mp": "blancs comme des culs"
      },
      "expansion": "blanc comme un cul (feminine blanche comme un cul, masculine plural blancs comme des culs, feminine plural blanches comme des culs)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French similes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "very white, untanned"
      ],
      "id": "en-blanc_comme_un_cul-fr-adj-4~rK81rh",
      "links": [
        [
          "white",
          "white"
        ],
        [
          "untanned",
          "untanned"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile, vulgar) very white, untanned"
      ],
      "synonyms": [
        {
          "word": "blanc comme un linge"
        },
        {
          "word": "blanc comme un cachet d'aspirine"
        },
        {
          "word": "blanc comme un navet"
        }
      ],
      "tags": [
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/blɑ̃ kɔ.m‿œ̃ ky/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-blanc comme un cul.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav.ogg"
    }
  ],
  "word": "blanc comme un cul"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "white as an ass"
      },
      "expansion": "“white as an ass”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "white as an ass"
      },
      "expansion": "Literally, “white as an ass”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “white as an ass”.",
  "forms": [
    {
      "form": "blanche comme un cul",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "blancs comme des culs",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "blanches comme des culs",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "f": "blanche comme un cul",
        "fp": "blanches comme des culs",
        "mp": "blancs comme des culs"
      },
      "expansion": "blanc comme un cul (feminine blanche comme un cul, masculine plural blancs comme des culs, feminine plural blanches comme des culs)",
      "name": "fr-adj"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "French adjectives",
        "French adjectives with red links in their headword lines",
        "French entries with incorrect language header",
        "French lemmas",
        "French multiword terms",
        "French similes",
        "French terms with IPA pronunciation",
        "French vulgarities",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "very white, untanned"
      ],
      "links": [
        [
          "white",
          "white"
        ],
        [
          "untanned",
          "untanned"
        ]
      ],
      "qualifier": "simile",
      "raw_glosses": [
        "(simile, vulgar) very white, untanned"
      ],
      "synonyms": [
        {
          "word": "blanc comme un linge"
        },
        {
          "word": "blanc comme un cachet d'aspirine"
        },
        {
          "word": "blanc comme un navet"
        }
      ],
      "tags": [
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/blɑ̃ kɔ.m‿œ̃ ky/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-blanc comme un cul.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/4/4c/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav/LL-Q150_%28fra%29-LoquaxFR-blanc_comme_un_cul.wav.ogg"
    }
  ],
  "word": "blanc comme un cul"
}