obsessed by a ghost; obesessed by a beauty (spoken)
Definitions (粵典–words.hk)
語句
俾鬼迷惑，形容精神狀態反常 an expression used to describe someone who has an abnormal mental status; literally "to be bewitched by a ghost"
你居然畀咗五舊水買橙，係咪俾鬼迷啊？
你居然畀咗五旧水买橙，系咪俾鬼迷啊？
nei5 geoi1 jin4 bei2 zo2 ng5 gau3 seoi2 mai5 caang2, hai6 mai6 bei2 gwai2 mai4 aa3? You paid five hundred dollars for oranges? Were you bewitched by a ghost?