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Jyutping heoi3 sai3 gaai3 bui1
Pinyin qù shì jiè bēi

Definitions (Wiktionary)
  1. verb, Shanghainese-Wu, humorous, slang, verb-object
    to go to the toilet
    (syn.) 上外頭, 出恭 rare, 上廁所, 去屎坑 rare, 去染蠻, 去洗手間, 去世界盃, 去廁所, 如廁, 喊悶, 出恭, 去toilet, 去便所