"give your head a wobble" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "give your head a wobble",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2020, Sophie Ranald, Thank You, Next",
          "text": "Give your head a wobble, Zoë, I told myself. You can't go around being broken-hearted because your heart isn't broken any more. That would be off-the-scale ridiculous.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Think again; an admonition to somebody who is behaving badly or saying something unacceptable."
      ],
      "id": "en-give_your_head_a_wobble-en-phrase-8hYNr9VW",
      "links": [
        [
          "Think again",
          "think again"
        ]
      ],
      "raw_glosses": [
        "(UK, colloquial) Think again; an admonition to somebody who is behaving badly or saying something unacceptable."
      ],
      "synonyms": [
        {
          "word": "have a word with oneself"
        }
      ],
      "tags": [
        "UK",
        "colloquial"
      ]
    }
  ],
  "word": "give your head a wobble"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "phrase"
      },
      "expansion": "give your head a wobble",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "British English",
        "English colloquialisms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2020, Sophie Ranald, Thank You, Next",
          "text": "Give your head a wobble, Zoë, I told myself. You can't go around being broken-hearted because your heart isn't broken any more. That would be off-the-scale ridiculous.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Think again; an admonition to somebody who is behaving badly or saying something unacceptable."
      ],
      "links": [
        [
          "Think again",
          "think again"
        ]
      ],
      "raw_glosses": [
        "(UK, colloquial) Think again; an admonition to somebody who is behaving badly or saying something unacceptable."
      ],
      "synonyms": [
        {
          "word": "have a word with oneself"
        }
      ],
      "tags": [
        "UK",
        "colloquial"
      ]
    }
  ],
  "word": "give your head a wobble"
}