動詞
因為太過驚訝或其他原因而無言以對，擘大個口得個窿 to open one's mouth wide open in surprise or shock or otherwise being speechless
聽到個消息大家都O晒咀，唔識俾反應。
听到个消息大家都O晒咀，唔识俾反应。
teng1 dou2 go3 siu1 sik1 daai6 gaa1 dou1 ou1 saai3 zeoi2, m4 sik1 bei2 faan2 jing3. Everyone stood agape after hearing the news. No one knew how they should react.