"bottom burp" meaning in English

{
  "forms": [
    {
      "form": "bottom burps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bottom burp (plural bottom burps)",
      "name": "en-noun"
    }
  ],
  "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"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2004, John O'Farrell, This Is Your Life, Grove Press",
          "text": "I would be awoken, not with a gentle kiss from mother, not with the melodic birdsong drifting in from an English country garden, but with a loud bottom burp blasted right into my eardrum at point-blank range...",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A fart."
      ],
      "id": "en-bottom_burp-en-noun-TDboHTtr",
      "links": [
        [
          "childish",
          "childish"
        ],
        [
          "fart",
          "fart"
        ]
      ],
      "raw_glosses": [
        "(childish) A fart."
      ],
      "synonyms": [
        {
          "word": "blow-off"
        },
        {
          "word": "botty burp"
        },
        {
          "word": "bum burp"
        },
        {
          "word": "flatulence"
        },
        {
          "word": "trump"
        }
      ],
      "tags": [
        "childish"
      ]
    }
  ],
  "word": "bottom burp"
}

{
  "forms": [
    {
      "form": "bottom burps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bottom burp (plural bottom burps)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English childish terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2004, John O'Farrell, This Is Your Life, Grove Press",
          "text": "I would be awoken, not with a gentle kiss from mother, not with the melodic birdsong drifting in from an English country garden, but with a loud bottom burp blasted right into my eardrum at point-blank range...",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A fart."
      ],
      "links": [
        [
          "childish",
          "childish"
        ],
        [
          "fart",
          "fart"
        ]
      ],
      "raw_glosses": [
        "(childish) A fart."
      ],
      "tags": [
        "childish"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "blow-off"
    },
    {
      "word": "botty burp"
    },
    {
      "word": "bum burp"
    },
    {
      "word": "flatulence"
    },
    {
      "word": "trump"
    }
  ],
  "word": "bottom burp"
}