鱷魚頭老襯底 (ngok6 jyu4 tau4 lou5 can3 dai2) — someone who looks very smart but is actually easily deceived and tricked in Cantonese
ngokˍ₆鱷jyuˎ₄魚tauˎ₄頭louˏ₅老can˗₃襯daiˊ²底简 鳄鱼头老衬底
Mandarin Pinyin: e4 yu2 tou2 lao3 chen4 di3
Meaning of 鱷魚頭老襯底
nounsomeone who looks very smart but is actually easily deceived and tricked