"two brain cells to rub together" meaning in English

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      "args": {
        "1": "p",
        "head": "two brain cells to rub together"
      },
      "expansion": "two brain cells to rub together pl (plural only)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "text": "Anyone with two brain cells to rub together can come up with an idea for a better system. The problem is actually implementing it.",
          "type": "example"
        }
      ],
      "glosses": [
        "A modicum of intelligence."
      ],
      "id": "en-two_brain_cells_to_rub_together-en-noun-HY9VIggZ",
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          "modicum",
          "modicum"
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      "raw_glosses": [
        "(informal) A modicum of intelligence."
      ],
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        "informal",
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  "word": "two brain cells to rub together"
}

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        "head": "two brain cells to rub together"
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      "expansion": "two brain cells to rub together pl (plural only)",
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  "lang_code": "en",
  "pos": "noun",
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        {
          "text": "Anyone with two brain cells to rub together can come up with an idea for a better system. The problem is actually implementing it.",
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        }
      ],
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        "A modicum of intelligence."
      ],
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        "(informal) A modicum of intelligence."
      ],
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  "word": "two brain cells to rub together"
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