"you had one job" meaning in English

{
  "etymology_text": "On the Web, the phrase is heavily associated with FAIL image macros.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "you had one job",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2022, Hana O, “‘What’s the point of a shelter?’ — Netizens ask as Admiralty MRT roof leaks from heavy downpour”, in The Independent Singapore:",
          "text": "A video uploaded on the Facebook group Complaint Singapore on Monday (Nov 28) sparked criticism among the online community as it featured an example of the meme, “you had one job” (and still failed).",
          "type": "quote"
        },
        {
          "ref": "2023 May 21, You Had One Job (@youhadonetask), Twitter, archived from the original on 2023-06-15:",
          "text": "Image of a T-shirt with an image of Africa labeled \"Asia\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "An expression used when someone had only one simple job to do but still failed it"
      ],
      "id": "en-you_had_one_job-en-phrase-Y~jd1bcT"
    }
  ],
  "word": "you had one job"
}

{
  "etymology_text": "On the Web, the phrase is heavily associated with FAIL image macros.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "you had one job",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "2022, Hana O, “‘What’s the point of a shelter?’ — Netizens ask as Admiralty MRT roof leaks from heavy downpour”, in The Independent Singapore:",
          "text": "A video uploaded on the Facebook group Complaint Singapore on Monday (Nov 28) sparked criticism among the online community as it featured an example of the meme, “you had one job” (and still failed).",
          "type": "quote"
        },
        {
          "ref": "2023 May 21, You Had One Job (@youhadonetask), Twitter, archived from the original on 2023-06-15:",
          "text": "Image of a T-shirt with an image of Africa labeled \"Asia\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "An expression used when someone had only one simple job to do but still failed it"
      ]
    }
  ],
  "word": "you had one job"
}