"is my middle name" meaning in English

{
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      "args": {
        "1": "en",
        "2": "phrase",
        "head": "is my middle name"
      },
      "expansion": "is my middle name",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1931, Cecil Freeman Gregg, I Have Killed a Man!, page 20",
          "text": "Not that I imagine that, from our very short acquaintance, he could possibly do so, but — careful is my middle name.",
          "type": "quotation"
        },
        {
          "ref": "2010, Kato, Good Guy Gone Bad, page 148",
          "text": "Don't worry you've met the right man! Excitement is my middle name!",
          "type": "quotation"
        },
        {
          "ref": "2010, Andre Giordano, Bookalam Park: New York Love Story, page 97",
          "text": "Havoc is my middle name, so don't mess with me.",
          "type": "quotation"
        },
        {
          "ref": "2015, Janie Crouch, Countermeasures: A Thrilling FBI Romance, page 78",
          "text": "Megan snickered. “Have you met me? Overthinking is my middle name.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Used to boast of a claimed characteristic or proficiency."
      ],
      "id": "en-is_my_middle_name-en-verb-U763h4M5"
    }
  ],
  "word": "is my middle name"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase",
        "head": "is my middle name"
      },
      "expansion": "is my middle name",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1931, Cecil Freeman Gregg, I Have Killed a Man!, page 20",
          "text": "Not that I imagine that, from our very short acquaintance, he could possibly do so, but — careful is my middle name.",
          "type": "quotation"
        },
        {
          "ref": "2010, Kato, Good Guy Gone Bad, page 148",
          "text": "Don't worry you've met the right man! Excitement is my middle name!",
          "type": "quotation"
        },
        {
          "ref": "2010, Andre Giordano, Bookalam Park: New York Love Story, page 97",
          "text": "Havoc is my middle name, so don't mess with me.",
          "type": "quotation"
        },
        {
          "ref": "2015, Janie Crouch, Countermeasures: A Thrilling FBI Romance, page 78",
          "text": "Megan snickered. “Have you met me? Overthinking is my middle name.”",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Used to boast of a claimed characteristic or proficiency."
      ]
    }
  ],
  "word": "is my middle name"
}