"piffy on a rock bun" meaning in English

{
  "etymology_text": "Age and etymology are uncertain; it existed in the 1930s and possibly derives from a music hall catchphrase. Some commentators (e.g. World Wide Words) suggest that piffy may have originally been patience, and the rock bun was simply a type of cake.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "piffy on a rock bun"
      },
      "expansion": "piffy on a rock bun (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I hate your work parties: you always talk shop with your mates and leave me sat like piffy on a rock bun."
        }
      ],
      "glosses": [
        "A person ignored or sidelined from an activity"
      ],
      "id": "en-piffy_on_a_rock_bun-en-noun-X~VZR6CI",
      "links": [
        [
          "ignored",
          "ignored"
        ],
        [
          "sidelined",
          "sidelined"
        ],
        [
          "activity",
          "activity"
        ]
      ],
      "raw_glosses": [
        "(slang, British, idiomatic) A person ignored or sidelined from an activity"
      ],
      "tags": [
        "British",
        "idiomatic",
        "slang",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-piffy on a rock bun.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d5/En-au-piffy_on_a_rock_bun.ogg/En-au-piffy_on_a_rock_bun.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d5/En-au-piffy_on_a_rock_bun.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "piffy on a rock bun"
}

{
  "etymology_text": "Age and etymology are uncertain; it existed in the 1930s and possibly derives from a music hall catchphrase. Some commentators (e.g. World Wide Words) suggest that piffy may have originally been patience, and the rock bun was simply a type of cake.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "piffy on a rock bun"
      },
      "expansion": "piffy on a rock bun (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "English terms with audio links",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "text": "I hate your work parties: you always talk shop with your mates and leave me sat like piffy on a rock bun."
        }
      ],
      "glosses": [
        "A person ignored or sidelined from an activity"
      ],
      "links": [
        [
          "ignored",
          "ignored"
        ],
        [
          "sidelined",
          "sidelined"
        ],
        [
          "activity",
          "activity"
        ]
      ],
      "raw_glosses": [
        "(slang, British, idiomatic) A person ignored or sidelined from an activity"
      ],
      "tags": [
        "British",
        "idiomatic",
        "slang",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-piffy on a rock bun.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d5/En-au-piffy_on_a_rock_bun.ogg/En-au-piffy_on_a_rock_bun.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d5/En-au-piffy_on_a_rock_bun.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "piffy on a rock bun"
}