"eat my dust" meaning in English

{
  "forms": [
    {
      "form": "eat my dust !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "eat my dust",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Hindi terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I'm ahead of ya! Eat my dust!"
        }
      ],
      "glosses": [
        "An in-your-face mockery to a losing rival, especially in a race"
      ],
      "id": "en-eat_my_dust-en-intj-jAw9wofa",
      "links": [
        [
          "in-your-face",
          "in-your-face#English"
        ]
      ],
      "raw_glosses": [
        "(informal) An in-your-face mockery to a losing rival, especially in a race"
      ],
      "related": [
        {
          "word": "eat someone's dust"
        }
      ],
      "tags": [
        "informal"
      ],
      "translations": [
        {
          "code": "hi",
          "lang": "Hindi",
          "note": "धूल चटाना (to defeat, literally “make (someone) lick dirt”)",
          "sense": "idiomatic"
        }
      ]
    }
  ],
  "word": "eat my dust"
}

{
  "forms": [
    {
      "form": "eat my dust !",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "eat my dust",
      "name": "en-interj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "intj",
  "related": [
    {
      "word": "eat someone's dust"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English informal terms",
        "English interjections",
        "English lemmas",
        "English multiword terms",
        "Hindi terms with non-redundant manual transliterations"
      ],
      "examples": [
        {
          "text": "I'm ahead of ya! Eat my dust!"
        }
      ],
      "glosses": [
        "An in-your-face mockery to a losing rival, especially in a race"
      ],
      "links": [
        [
          "in-your-face",
          "in-your-face#English"
        ]
      ],
      "raw_glosses": [
        "(informal) An in-your-face mockery to a losing rival, especially in a race"
      ],
      "tags": [
        "informal"
      ]
    }
  ],
  "translations": [
    {
      "code": "hi",
      "lang": "Hindi",
      "note": "धूल चटाना (to defeat, literally “make (someone) lick dirt”)",
      "sense": "idiomatic"
    }
  ],
  "word": "eat my dust"
}