"jack it" meaning in English

{
  "forms": [
    {
      "form": "jacks it",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "jacking it",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "jacked it",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "jacked it",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "jack it (third-person singular simple present jacks it, present participle jacking it, simple past and past participle jacked it)",
      "name": "en-verb"
    }
  ],
  "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with placeholder \"it\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sex",
          "orig": "en:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Sometimes a man just needs to jack it to clear his head."
        },
        {
          "ref": "2002 March 6, Trey Parker, “Jared Has Aides”, in South Park, season 6, episode 1, production code 602",
          "text": "Eric Cartman: Oh, gee whiz, I'm not.. watchin' television, Dad, I'm just... laying around jacking it.\nStephen Stotch: Jacking it? Jacking what?\nEric Cartman: Well my hot spicy boner, of course, Dad.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To masturbate."
      ],
      "id": "en-jack_it-en-verb-~E9p9hIT",
      "links": [
        [
          "masturbate",
          "masturbate"
        ]
      ],
      "raw_glosses": [
        "(intransitive, colloquial, vulgar) To masturbate."
      ],
      "related": [
        {
          "word": "jack off"
        }
      ],
      "tags": [
        "colloquial",
        "intransitive",
        "vulgar"
      ]
    }
  ],
  "word": "jack it"
}

{
  "forms": [
    {
      "form": "jacks it",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "jacking it",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "jacked it",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "jacked it",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "jack it (third-person singular simple present jacks it, present participle jacking it, simple past and past participle jacked it)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "jack off"
    }
  ],
  "senses": [
    {
      "categories": [
        "English colloquialisms",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English intransitive verbs",
        "English lemmas",
        "English multiword terms",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with placeholder \"it\"",
        "English terms with quotations",
        "English verbs",
        "English vulgarities",
        "en:Sex"
      ],
      "examples": [
        {
          "text": "Sometimes a man just needs to jack it to clear his head."
        },
        {
          "ref": "2002 March 6, Trey Parker, “Jared Has Aides”, in South Park, season 6, episode 1, production code 602",
          "text": "Eric Cartman: Oh, gee whiz, I'm not.. watchin' television, Dad, I'm just... laying around jacking it.\nStephen Stotch: Jacking it? Jacking what?\nEric Cartman: Well my hot spicy boner, of course, Dad.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To masturbate."
      ],
      "links": [
        [
          "masturbate",
          "masturbate"
        ]
      ],
      "raw_glosses": [
        "(intransitive, colloquial, vulgar) To masturbate."
      ],
      "tags": [
        "colloquial",
        "intransitive",
        "vulgar"
      ]
    }
  ],
  "word": "jack it"
}