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Jyutping lau6 niu5
Pinyin liú niǎo

Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping lau4 niu5
Pinyin liù niǎo

Definitions (Wiktionary)
  1. verb, Taiwan, colloquial, of a man
    to expose one's genitals in public; to streak
  2. verb
    to walk one's bird (a common pastime activity for the elderly in mainland China and Taiwan)