"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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "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": "quote"
        },
        {
          "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": "quote"
        }
      ],
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "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": "quote"
        },
        {
          "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": "quote"
        }
      ],
      "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"
}