"potato head" meaning in English

{
  "etymology_text": "Perhaps in reference to Mr. Potato Head, a plastic toy of the mid-20th century, resembling a potato with human features.",
  "forms": [
    {
      "form": "potato heads",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "potatohead",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "potato-head",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "potato head (plural potato heads)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A foolish person."
      ],
      "id": "en-potato_head-en-noun-gQN140CO",
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "foolish",
          "foolish"
        ]
      ],
      "raw_glosses": [
        "(mildly derogatory) A foolish person."
      ],
      "tags": [
        "derogatory",
        "mildly"
      ],
      "wikipedia": [
        "Mr. Potato Head"
      ]
    }
  ],
  "word": "potato head"
}

{
  "etymology_text": "Perhaps in reference to Mr. Potato Head, a plastic toy of the mid-20th century, resembling a potato with human features.",
  "forms": [
    {
      "form": "potato heads",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "potatohead",
      "tags": [
        "alternative"
      ]
    },
    {
      "form": "potato-head",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "potato head (plural potato heads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English derogatory terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A foolish person."
      ],
      "links": [
        [
          "derogatory",
          "derogatory"
        ],
        [
          "foolish",
          "foolish"
        ]
      ],
      "raw_glosses": [
        "(mildly derogatory) A foolish person."
      ],
      "tags": [
        "derogatory",
        "mildly"
      ],
      "wikipedia": [
        "Mr. Potato Head"
      ]
    }
  ],
  "word": "potato head"
}