有空無榫 [－－无－]

Jyutping jau5 hung1 mou4 seon2
Pinyin yǒu kòng wú sǔn

Definitions (Wiktionary)
  1. phrase, Min-Nan, idiomatic
    crazy; bizarre; weird; fantastic; strange
    (syn.) 有潲無鼻, 有𩮴无捾, 稀奇古怪, 有𩮴無捾, 有潲无鼻