"с какого перепугу" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "from what (kind of) fright"
      },
      "expansion": "“from what (kind of) fright”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "from what (kind of) fright"
      },
      "expansion": "Literally, “from what (kind of) fright”",
      "name": "lit"
    },
    {
      "args": {
        "1": "partitive case"
      },
      "expansion": "partitive case",
      "name": "lg"
    }
  ],
  "etymology_text": "Literally, “from what (kind of) fright”, with перепу́г (perepúg) in partitive case.",
  "forms": [
    {
      "form": "с како́го перепу́гу",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "s kakóvo perepúgu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "phrase",
        "head": "с како́го перепу́гу"
      },
      "expansion": "с како́го перепу́гу • (s kakóvo perepúgu)",
      "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": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Why on earth did you decide that this was a good idea?",
          "roman": "S kakóvo perepúgu ty rešíl, što éto xoróšaja idéja?",
          "text": "С како́го перепу́гу ты реши́л, что э́то хоро́шая иде́я?",
          "type": "example"
        }
      ],
      "glosses": [
        "why on earth, why the hell"
      ],
      "id": "en-с_какого_перепугу-ru-phrase-YOJs8BH4",
      "links": [
        [
          "why on earth",
          "why on earth"
        ],
        [
          "why",
          "why"
        ],
        [
          "the hell",
          "the hell"
        ]
      ],
      "raw_glosses": [
        "(colloquial) why on earth, why the hell"
      ],
      "synonyms": [
        {
          "word": "с како́й ста́ти"
        },
        {
          "english": "similar frequency",
          "roman": "s kakóvo perepúga",
          "word": "с како́го перепу́га"
        }
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[s‿kɐˈkovə pʲɪrʲɪˈpuɡʊ]"
    }
  ],
  "word": "с какого перепугу"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "from what (kind of) fright"
      },
      "expansion": "“from what (kind of) fright”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "from what (kind of) fright"
      },
      "expansion": "Literally, “from what (kind of) fright”",
      "name": "lit"
    },
    {
      "args": {
        "1": "partitive case"
      },
      "expansion": "partitive case",
      "name": "lg"
    }
  ],
  "etymology_text": "Literally, “from what (kind of) fright”, with перепу́г (perepúg) in partitive case.",
  "forms": [
    {
      "form": "с како́го перепу́гу",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "s kakóvo perepúgu",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "phrase",
        "head": "с како́го перепу́гу"
      },
      "expansion": "с како́го перепу́гу • (s kakóvo perepúgu)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian colloquialisms",
        "Russian entries with incorrect language header",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian phrases",
        "Russian terms with IPA pronunciation",
        "Russian terms with usage examples"
      ],
      "examples": [
        {
          "english": "Why on earth did you decide that this was a good idea?",
          "roman": "S kakóvo perepúgu ty rešíl, što éto xoróšaja idéja?",
          "text": "С како́го перепу́гу ты реши́л, что э́то хоро́шая иде́я?",
          "type": "example"
        }
      ],
      "glosses": [
        "why on earth, why the hell"
      ],
      "links": [
        [
          "why on earth",
          "why on earth"
        ],
        [
          "why",
          "why"
        ],
        [
          "the hell",
          "the hell"
        ]
      ],
      "raw_glosses": [
        "(colloquial) why on earth, why the hell"
      ],
      "synonyms": [
        {
          "word": "с како́й ста́ти"
        }
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[s‿kɐˈkovə pʲɪrʲɪˈpuɡʊ]"
    }
  ],
  "synonyms": [
    {
      "english": "similar frequency",
      "roman": "s kakóvo perepúga",
      "word": "с како́го перепу́га"
    }
  ],
  "word": "с какого перепугу"
}