"på smällen" meaning in Swedish

{
  "forms": [
    {
      "form": "use only",
      "tags": [
        "predicative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "adjective",
        "3": "predicative use only",
        "head": "på smällen"
      },
      "expansion": "på smällen (predicative use only)",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "sv",
          "name": "Pregnancy",
          "orig": "sv:Pregnancy",
          "parents": [
            "Body",
            "Gynaecology",
            "Human",
            "Female",
            "Medicine",
            "All topics",
            "Gender",
            "Biology",
            "Sciences",
            "Fundamental",
            "Psychology",
            "Sociology",
            "Social sciences",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "pregnant"
      ],
      "id": "en-på_smällen-sv-adj-N2vnLji7",
      "links": [
        [
          "pregnant",
          "pregnant"
        ]
      ],
      "raw_glosses": [
        "(slang) pregnant"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "på smällen"
}

{
  "forms": [
    {
      "form": "use only",
      "tags": [
        "predicative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "adjective",
        "3": "predicative use only",
        "head": "på smällen"
      },
      "expansion": "på smällen (predicative use only)",
      "name": "head"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Swedish adjectives",
        "Swedish entries with incorrect language header",
        "Swedish entries with topic categories using raw markup",
        "Swedish lemmas",
        "Swedish multiword terms",
        "Swedish slang",
        "Swedish terms with non-redundant non-automated sortkeys",
        "sv:Pregnancy"
      ],
      "glosses": [
        "pregnant"
      ],
      "links": [
        [
          "pregnant",
          "pregnant"
        ]
      ],
      "raw_glosses": [
        "(slang) pregnant"
      ],
      "tags": [
        "slang"
      ]
    }
  ],
  "word": "på smällen"
}