"fuckity bye" meaning in English

{
  "etymology_templates": [
    {
      "args": {
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        "2": "Peter Capaldi",
        "in": "2009",
        "nat": "Scottish",
        "occ": "actor"
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      "expansion": "Coined by Scottish actor Peter Capaldi in 2009",
      "name": "coinage"
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  "etymology_text": "Coined by Scottish actor Peter Capaldi in 2009 as the character Malcolm Tucker in the film In the Loop, a spin-off from the television show The Thick of It. Subsequently gained mild popularity on social media.",
  "head_templates": [
    {
      "args": {},
      "expansion": "fuckity bye",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English farewells",
          "parents": [],
          "source": "w"
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        {
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          "parents": [],
          "source": "w"
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      ],
      "glosses": [
        "A contemptuous farewell."
      ],
      "id": "en-fuckity_bye-en-intj-vU1RM8KE",
      "raw_glosses": [
        "(vulgar, offensive) A contemptuous farewell."
      ],
      "tags": [
        "offensive",
        "vulgar"
      ],
      "wikipedia": [
        "In the Loop",
        "Malcolm Tucker",
        "The Thick of It"
      ]
    }
  ],
  "word": "fuckity bye"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "Peter Capaldi",
        "in": "2009",
        "nat": "Scottish",
        "occ": "actor"
      },
      "expansion": "Coined by Scottish actor Peter Capaldi in 2009",
      "name": "coinage"
    }
  ],
  "etymology_text": "Coined by Scottish actor Peter Capaldi in 2009 as the character Malcolm Tucker in the film In the Loop, a spin-off from the television show The Thick of It. Subsequently gained mild popularity on social media.",
  "head_templates": [
    {
      "args": {},
      "expansion": "fuckity bye",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        "English coinages",
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        "English farewells",
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        "English offensive terms",
        "English terms coined by Peter Capaldi",
        "English vulgarities",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A contemptuous farewell."
      ],
      "raw_glosses": [
        "(vulgar, offensive) A contemptuous farewell."
      ],
      "tags": [
        "offensive",
        "vulgar"
      ],
      "wikipedia": [
        "In the Loop",
        "Malcolm Tucker",
        "The Thick of It"
      ]
    }
  ],
  "word": "fuckity bye"
}