"ничего себе" meaning in Russian

{
  "etymology_number": 1,
  "etymology_text": "ничего (ničevo) + себе (sebe)",
  "forms": [
    {
      "form": "ничего́ себе́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ničevó sebé",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection",
        "head": "ничего́ себе́"
      },
      "expansion": "ничего́ себе́ • (ničevó sebé)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "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": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "wow!"
      ],
      "id": "en-ничего_себе-ru-intj-76EVKA7t",
      "links": [
        [
          "wow",
          "wow"
        ]
      ],
      "raw_glosses": [
        "(colloquial) wow!"
      ],
      "related": [
        {
          "roman": "váu",
          "word": "ва́у"
        },
        {
          "roman": "ogó",
          "word": "ого́"
        },
        {
          "roman": "úx ty",
          "word": "у́х ты"
        },
        {
          "roman": "nu ty dajóšʹ",
          "word": "ну ты даёшь"
        }
      ],
      "synonyms": [
        {
          "word": "ни хуя́ себе́"
        },
        {
          "word": "ни хера́ себе́"
        },
        {
          "word": "ни черта́ себе́"
        },
        {
          "word": "ни фига́ себе́"
        },
        {
          "word": "ни хрена́ себе́"
        },
        {
          "word": "ни шиша́ себе́"
        },
        {
          "roman": "ničóse",
          "word": "ничёсе"
        },
        {
          "roman": "ničóse",
          "word": "ничо́се"
        },
        {
          "roman": "ničósi",
          "tags": [
            "proscribed"
          ],
          "word": "ничо́си"
        }
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪt͡ɕɪˈvo sʲɪˌbʲe]"
    }
  ],
  "word": "ничего себе"
}

{
  "etymology_number": 1,
  "etymology_text": "ничего (ničevo) + себе (sebe)",
  "forms": [
    {
      "form": "ничего́ себе́",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "ničevó sebé",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection",
        "head": "ничего́ себе́"
      },
      "expansion": "ничего́ себе́ • (ničevó sebé)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "related": [
    {
      "roman": "váu",
      "word": "ва́у"
    },
    {
      "roman": "ogó",
      "word": "ого́"
    },
    {
      "roman": "úx ty",
      "word": "у́х ты"
    },
    {
      "roman": "nu ty dajóšʹ",
      "word": "ну ты даёшь"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian colloquialisms",
        "Russian entries with incorrect language header",
        "Russian interjections",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian terms with IPA pronunciation"
      ],
      "glosses": [
        "wow!"
      ],
      "links": [
        [
          "wow",
          "wow"
        ]
      ],
      "raw_glosses": [
        "(colloquial) wow!"
      ],
      "synonyms": [
        {
          "word": "ни хуя́ себе́"
        },
        {
          "word": "ни хера́ себе́"
        },
        {
          "word": "ни черта́ себе́"
        },
        {
          "word": "ни фига́ себе́"
        },
        {
          "word": "ни хрена́ себе́"
        },
        {
          "word": "ни шиша́ себе́"
        }
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪt͡ɕɪˈvo sʲɪˌbʲe]"
    }
  ],
  "synonyms": [
    {
      "roman": "ničóse",
      "word": "ничёсе"
    },
    {
      "roman": "ničóse",
      "word": "ничо́се"
    },
    {
      "roman": "ničósi",
      "tags": [
        "proscribed"
      ],
      "word": "ничо́си"
    }
  ],
  "word": "ничего себе"
}