"tank slapper" meaning in English

{
  "forms": [
    {
      "form": "tank slappers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tank slapper (plural tank slappers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A phenomenon resulting from inadequate dampening of the steering of a motorcycle at high speed. This results in the violent oscillation of the handlebars from left to right, so that they make contact with the gas tank, which is situated on the chassis between them. Is also used frequently to describe a vehicle that loses and regains traction at the rear of the car, whilst the front retains traction."
      ],
      "id": "en-tank_slapper-en-noun-PQuagX7M",
      "links": [
        [
          "motorcycle",
          "motorcycle"
        ],
        [
          "oscillation",
          "oscillation"
        ],
        [
          "handlebar",
          "handlebar"
        ],
        [
          "gas tank",
          "gas tank"
        ],
        [
          "chassis",
          "chassis"
        ],
        [
          "traction",
          "traction"
        ]
      ],
      "wikipedia": [
        "Speed wobble"
      ]
    }
  ],
  "word": "tank slapper"
}

{
  "forms": [
    {
      "form": "tank slappers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tank slapper (plural tank slappers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A phenomenon resulting from inadequate dampening of the steering of a motorcycle at high speed. This results in the violent oscillation of the handlebars from left to right, so that they make contact with the gas tank, which is situated on the chassis between them. Is also used frequently to describe a vehicle that loses and regains traction at the rear of the car, whilst the front retains traction."
      ],
      "links": [
        [
          "motorcycle",
          "motorcycle"
        ],
        [
          "oscillation",
          "oscillation"
        ],
        [
          "handlebar",
          "handlebar"
        ],
        [
          "gas tank",
          "gas tank"
        ],
        [
          "chassis",
          "chassis"
        ],
        [
          "traction",
          "traction"
        ]
      ],
      "wikipedia": [
        "Speed wobble"
      ]
    }
  ],
  "word": "tank slapper"
}