佢瘋瘋癲癲噉,都唔知係咪真係傻嘅。
佢疯疯癫癫噉,都唔知系咪真系傻嘅。
keoi5 fung1 fung1 din1 din1 gam2, dou1 m4 zi1 hai6 mai6 zan1 hai6 so4 ge3. He acts like a madman, I wonder if he's really mad or not.
Definitions (Wiktionary)
verb
to be insane; to be crazy; to be mad (syn.) 瘋魔, 疯魔