"I'll tell you what" meaning in English

{
  "forms": [
    {
      "form": "I tell you what",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phr"
      },
      "expansion": "I'll tell you what",
      "name": "en-head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
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      "examples": [
        {
          "bold_text_offsets": [
            [
              0,
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          ],
          "text": "I'll tell you what: just for you, just for today, the price can be 20% off.",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              124,
              142
            ]
          ],
          "text": "You might as well take him up on it and give the man his money, because you won't find another one that cheap anytime soon, I'll tell you what.",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              14,
              27
            ]
          ],
          "ref": "c. 1596–1599 (date written), William Shakespeare, “The Second Part of Henry the Fourth, […]. Epilogue.”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act I, scene i]:",
          "text": "My lord, I'll tell you what;/ If my young lord your son have not the day,/ Upon mine honour, for a silken point/ I'll give my barony: never talk of it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of tell you what."
      ],
      "id": "en-I'll_tell_you_what-en-phrase-NS-AsqbQ",
      "links": [
        [
          "tell you what",
          "tell you what#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tell you what"
        }
      ]
    }
  ],
  "word": "I'll tell you what"
}

{
  "forms": [
    {
      "form": "I tell you what",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phr"
      },
      "expansion": "I'll tell you what",
      "name": "en-head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrases",
        "English terms with quotations",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
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      "examples": [
        {
          "bold_text_offsets": [
            [
              0,
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            ]
          ],
          "text": "I'll tell you what: just for you, just for today, the price can be 20% off.",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              124,
              142
            ]
          ],
          "text": "You might as well take him up on it and give the man his money, because you won't find another one that cheap anytime soon, I'll tell you what.",
          "type": "example"
        },
        {
          "bold_text_offsets": [
            [
              14,
              27
            ]
          ],
          "ref": "c. 1596–1599 (date written), William Shakespeare, “The Second Part of Henry the Fourth, […]. Epilogue.”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act I, scene i]:",
          "text": "My lord, I'll tell you what;/ If my young lord your son have not the day,/ Upon mine honour, for a silken point/ I'll give my barony: never talk of it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of tell you what."
      ],
      "links": [
        [
          "tell you what",
          "tell you what#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tell you what"
        }
      ]
    }
  ],
  "word": "I'll tell you what"
}