"one pump chump" meaning in English

{
  "etymology_text": "Chosen for the rhyme. From the tendency of people suffering from premature ejaculation to ejaculate after a very short time, perhaps even after a single pelvic thrust or “pump”, during sexual intercourse.",
  "forms": [
    {
      "form": "one pump chumps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "one pump chump (plural one pump chumps)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Sex",
          "orig": "en:Sex",
          "parents": [
            "All topics",
            "Reproduction",
            "Fundamental",
            "Life",
            "Nature"
          ],
          "source": "w"
        },
        {
          "_dis": "96 4",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "82 18",
          "kind": "other",
          "name": "English rhyming compounds",
          "parents": [
            "Rhyming compounds",
            "Compound terms",
            "Rhyming phrases",
            "Terms by etymology",
            "Phrases",
            "Lemmas",
            "Multiword terms"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "96 4",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Premature ejaculator (person suffering from premature ejaculation)."
      ],
      "id": "en-one_pump_chump-en-noun-05GYnGF8",
      "links": [
        [
          "Premature ejaculator",
          "premature ejaculator"
        ],
        [
          "premature ejaculation",
          "premature ejaculation#English"
        ]
      ],
      "raw_glosses": [
        "(informal) Premature ejaculator (person suffering from premature ejaculation)."
      ],
      "related": [
        {
          "_dis1": "58 42",
          "word": "one-and-done"
        }
      ],
      "tags": [
        "informal"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "someone who only does something once."
      ],
      "id": "en-one_pump_chump-en-noun-XJMAGyhn",
      "raw_glosses": [
        "(informal, by extension) someone who only does something once."
      ],
      "tags": [
        "broadly",
        "informal"
      ]
    }
  ],
  "word": "one pump chump"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English rhyming compounds",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_text": "Chosen for the rhyme. From the tendency of people suffering from premature ejaculation to ejaculate after a very short time, perhaps even after a single pelvic thrust or “pump”, during sexual intercourse.",
  "forms": [
    {
      "form": "one pump chumps",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "one pump chump (plural one pump chumps)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "one-and-done"
    }
  ],
  "senses": [
    {
      "categories": [
        "English informal terms",
        "en:Sex"
      ],
      "glosses": [
        "Premature ejaculator (person suffering from premature ejaculation)."
      ],
      "links": [
        [
          "Premature ejaculator",
          "premature ejaculator"
        ],
        [
          "premature ejaculation",
          "premature ejaculation#English"
        ]
      ],
      "raw_glosses": [
        "(informal) Premature ejaculator (person suffering from premature ejaculation)."
      ],
      "tags": [
        "informal"
      ]
    },
    {
      "categories": [
        "English informal terms"
      ],
      "glosses": [
        "someone who only does something once."
      ],
      "raw_glosses": [
        "(informal, by extension) someone who only does something once."
      ],
      "tags": [
        "broadly",
        "informal"
      ]
    }
  ],
  "word": "one pump chump"
}