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Jyutping maai6 bou3 m4 daai3 cek3
Pinyin mài bù wú dài chǐ

Definitions (粵典–words.hk)
  1. 語句
    歇後語​;​後​半句​係​「​存心不良​」​,​利用​「​良​」​同​「​量​」​(​loeng4​)​嘅​諧​音​,​形容​人​企圖​做​衰​嘢
    a sandwich pun which implies "to have bad or harmful intentions"; literally: to sell cloth but not to bring a ruler