"低B" meaning in Chinese

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "若要人不知，唔好咁低B"
    }
  ],
  "etymology_text": "Originates from triad slang.",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "低B",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cantonese Chinese",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "stupid"
      ],
      "id": "en-低B-zh-adj-wtIUpITp",
      "links": [
        [
          "stupid",
          "stupid"
        ]
      ],
      "raw_glosses": [
        "(Cantonese, slang) stupid"
      ],
      "tags": [
        "Cantonese",
        "slang"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Cantonese Chinese",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "2 98",
          "kind": "other",
          "name": "Chinese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "3 97",
          "kind": "other",
          "name": "Chinese terms written in multiple scripts",
          "parents": [
            "Terms written in multiple scripts",
            "Terms by orthographic property",
            "Terms by lexical property"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "extremely easy; child's play"
      ],
      "id": "en-低B-zh-adj-kIg9WXfN",
      "links": [
        [
          "child's play",
          "child's play"
        ]
      ],
      "raw_glosses": [
        "(Cantonese, slang) extremely easy; child's play"
      ],
      "tags": [
        "Cantonese",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Cantonese",
        "Jyutping"
      ],
      "zh-pron": "dai¹ bi¹"
    },
    {
      "tags": [
        "Cantonese",
        "Yale"
      ],
      "zh-pron": "dāi bī"
    },
    {
      "tags": [
        "Cantonese",
        "Pinyin"
      ],
      "zh-pron": "dai¹ bi¹"
    },
    {
      "tags": [
        "Cantonese",
        "Guangdong-Romanization"
      ],
      "zh-pron": "dei¹ bi¹"
    },
    {
      "ipa": "/tɐi̯⁵⁵ piː⁵⁵/",
      "tags": [
        "Cantonese",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/tɐi̯⁵⁵ piː⁵⁵/"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "roman": "dīnéng",
      "word": "低能"
    },
    {
      "_dis1": "0 0",
      "roman": "dījí",
      "word": "低級／低级"
    },
    {
      "_dis1": "0 0",
      "roman": "dījí",
      "word": "低級"
    },
    {
      "_dis1": "0 0",
      "roman": "dījí",
      "word": "低级"
    }
  ],
  "word": "低B"
}

{
  "categories": [
    "Chinese adjectives",
    "Chinese entries with incorrect language header",
    "Chinese lemmas",
    "Chinese terms with IPA pronunciation",
    "Chinese terms written in multiple scripts"
  ],
  "derived": [
    {
      "word": "若要人不知，唔好咁低B"
    }
  ],
  "etymology_text": "Originates from triad slang.",
  "head_templates": [
    {
      "args": {
        "1": "zh",
        "2": "adjective"
      },
      "expansion": "低B",
      "name": "head"
    }
  ],
  "lang": "Chinese",
  "lang_code": "zh",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Cantonese Chinese",
        "Chinese slang"
      ],
      "glosses": [
        "stupid"
      ],
      "links": [
        [
          "stupid",
          "stupid"
        ]
      ],
      "raw_glosses": [
        "(Cantonese, slang) stupid"
      ],
      "tags": [
        "Cantonese",
        "slang"
      ]
    },
    {
      "categories": [
        "Cantonese Chinese",
        "Chinese slang"
      ],
      "glosses": [
        "extremely easy; child's play"
      ],
      "links": [
        [
          "child's play",
          "child's play"
        ]
      ],
      "raw_glosses": [
        "(Cantonese, slang) extremely easy; child's play"
      ],
      "tags": [
        "Cantonese",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "tags": [
        "Cantonese",
        "Jyutping"
      ],
      "zh-pron": "dai¹ bi¹"
    },
    {
      "tags": [
        "Cantonese",
        "Yale"
      ],
      "zh-pron": "dāi bī"
    },
    {
      "tags": [
        "Cantonese",
        "Pinyin"
      ],
      "zh-pron": "dai¹ bi¹"
    },
    {
      "tags": [
        "Cantonese",
        "Guangdong-Romanization"
      ],
      "zh-pron": "dei¹ bi¹"
    },
    {
      "ipa": "/tɐi̯⁵⁵ piː⁵⁵/",
      "tags": [
        "Cantonese",
        "Sinological-IPA"
      ]
    },
    {
      "ipa": "/tɐi̯⁵⁵ piː⁵⁵/"
    }
  ],
  "synonyms": [
    {
      "roman": "dīnéng",
      "word": "低能"
    },
    {
      "roman": "dījí",
      "word": "低級／低级"
    },
    {
      "roman": "dījí",
      "word": "低級"
    },
    {
      "roman": "dījí",
      "word": "低级"
    }
  ],
  "word": "低B"
}