"clue-by-four" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "clue",
        "3": "two-by-four"
      },
      "expansion": "Blend of clue + two-by-four",
      "name": "blend"
    }
  ],
  "etymology_text": "Blend of clue + two-by-four",
  "forms": [
    {
      "form": "clue-by-fours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clue-by-four (plural clue-by-fours)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English blends",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1993, anonymous author, “Re: Recent Events from the Horseman”, in alt.sex.bondage (Usenet)",
          "text": "If I think they're a jerk who's using a march to show how cool and open minded they are, I pull out the ol' clue by four.",
          "type": "quotation"
        },
        {
          "text": "1998, TCurryFan, Re: Carlos and Ashley?, alt.fan.power-rangers, http://groups.google.com/group/alt.fan.power-rangers/msg/46e0bac76b6c462d?dmode=source&hl=en\nNah... I'm not gonna waste a good clue-by-four on someone with no brain..."
        },
        {
          "ref": "2003, Willow Polson, The Veil's Edge: Exploring the Boundaries of Magic, page 152",
          "text": "Sometimes the magic \"clue-by-four\" is so obvious that even your oblivious rock-headed uncle picks up on it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A notional weapon used to knock sense into the clueless."
      ],
      "id": "en-clue-by-four-en-noun-WsLH2mD9",
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "notional",
          "notional"
        ],
        [
          "weapon",
          "weapon"
        ],
        [
          "sense",
          "sense"
        ],
        [
          "clueless",
          "clueless"
        ]
      ],
      "raw_glosses": [
        "(informal, humorous, figuratively) A notional weapon used to knock sense into the clueless."
      ],
      "synonyms": [
        {
          "word": "cluestick"
        },
        {
          "word": "cluebat"
        },
        {
          "word": "clue by four"
        }
      ],
      "tags": [
        "figuratively",
        "humorous",
        "informal"
      ]
    }
  ],
  "word": "clue-by-four"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "clue",
        "3": "two-by-four"
      },
      "expansion": "Blend of clue + two-by-four",
      "name": "blend"
    }
  ],
  "etymology_text": "Blend of clue + two-by-four",
  "forms": [
    {
      "form": "clue-by-fours",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "clue-by-four (plural clue-by-fours)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English blends",
        "English countable nouns",
        "English entries with incorrect language header",
        "English humorous terms",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1993, anonymous author, “Re: Recent Events from the Horseman”, in alt.sex.bondage (Usenet)",
          "text": "If I think they're a jerk who's using a march to show how cool and open minded they are, I pull out the ol' clue by four.",
          "type": "quotation"
        },
        {
          "text": "1998, TCurryFan, Re: Carlos and Ashley?, alt.fan.power-rangers, http://groups.google.com/group/alt.fan.power-rangers/msg/46e0bac76b6c462d?dmode=source&hl=en\nNah... I'm not gonna waste a good clue-by-four on someone with no brain..."
        },
        {
          "ref": "2003, Willow Polson, The Veil's Edge: Exploring the Boundaries of Magic, page 152",
          "text": "Sometimes the magic \"clue-by-four\" is so obvious that even your oblivious rock-headed uncle picks up on it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A notional weapon used to knock sense into the clueless."
      ],
      "links": [
        [
          "humorous",
          "humorous"
        ],
        [
          "notional",
          "notional"
        ],
        [
          "weapon",
          "weapon"
        ],
        [
          "sense",
          "sense"
        ],
        [
          "clueless",
          "clueless"
        ]
      ],
      "raw_glosses": [
        "(informal, humorous, figuratively) A notional weapon used to knock sense into the clueless."
      ],
      "tags": [
        "figuratively",
        "humorous",
        "informal"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "cluestick"
    },
    {
      "word": "cluebat"
    },
    {
      "word": "clue by four"
    }
  ],
  "word": "clue-by-four"
}