"lung butter" meaning in English

{
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      "expansion": "lung butter (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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      "examples": [
        {
          "ref": "1993, Wayne's World 2 (film)",
          "text": "WAYNE: What I'd really like to do is something extraordinary. Something big. […] But I'll probably end up working at Great America, mopping up hurl and lung butter."
        }
      ],
      "glosses": [
        "Thick mucus that is coughed up."
      ],
      "id": "en-lung_butter-en-noun-7byKDprh",
      "links": [
        [
          "Thick",
          "thick"
        ],
        [
          "mucus",
          "mucus"
        ],
        [
          "coughed up",
          "cough up"
        ]
      ],
      "raw_glosses": [
        "(slang) Thick mucus that is coughed up."
      ],
      "tags": [
        "slang",
        "uncountable"
      ]
    }
  ],
  "word": "lung butter"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "lung butter (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "1993, Wayne's World 2 (film)",
          "text": "WAYNE: What I'd really like to do is something extraordinary. Something big. […] But I'll probably end up working at Great America, mopping up hurl and lung butter."
        }
      ],
      "glosses": [
        "Thick mucus that is coughed up."
      ],
      "links": [
        [
          "Thick",
          "thick"
        ],
        [
          "mucus",
          "mucus"
        ],
        [
          "coughed up",
          "cough up"
        ]
      ],
      "raw_glosses": [
        "(slang) Thick mucus that is coughed up."
      ],
      "tags": [
        "slang",
        "uncountable"
      ]
    }
  ],
  "word": "lung butter"
}