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Jyutping daai3 doi2
Pinyin dài dài

Definitions (粵典–words.hk)
  1. 名詞、俚語
    暗喻​戴​安全套
    to wear a condom; literally: to wear a bag

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Jyutping daai3 doi6
Pinyin dài dài

Definitions (CC-CANTO)
  1. to put on a condom [colloquial]