"первый нах" meaning in Russian

{
  "etymology_text": "The second word is short for на хуй (na xuj, “fuck off, also a vulgar intensifier”), ultimately from хуй (xuj, “cock”). This phrase is posted as the very first response to any original post in any social media, claiming victory in a silly competition, who responds first.",
  "forms": [
    {
      "form": "пе́рвый нах",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pérvyj nax",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "первыйнах",
      "roman": "pervyjnax",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "phrase",
        "head": "пе́рвый нах"
      },
      "expansion": "пе́рвый нах • (pérvyj nax)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "\"I am the fucking first!\""
      ],
      "id": "en-первый_нах-ru-phrase-tWGawyVb",
      "links": [
        [
          "Internet",
          "Internet"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, vulgar) \"I am the fucking first!\""
      ],
      "tags": [
        "Internet",
        "vulgar"
      ],
      "topics": []
    }
  ],
  "word": "первый нах"
}

{
  "etymology_text": "The second word is short for на хуй (na xuj, “fuck off, also a vulgar intensifier”), ultimately from хуй (xuj, “cock”). This phrase is posted as the very first response to any original post in any social media, claiming victory in a silly competition, who responds first.",
  "forms": [
    {
      "form": "пе́рвый нах",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pérvyj nax",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "первыйнах",
      "roman": "pervyjnax",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "phrase",
        "head": "пе́рвый нах"
      },
      "expansion": "пе́рвый нах • (pérvyj nax)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian entries with incorrect language header",
        "Russian internet slang",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian phrases",
        "Russian vulgarities"
      ],
      "glosses": [
        "\"I am the fucking first!\""
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, vulgar) \"I am the fucking first!\""
      ],
      "tags": [
        "Internet",
        "vulgar"
      ],
      "topics": []
    }
  ],
  "word": "первый нах"
}