one's jaw drop (open)
01
used when something, such as unexpected news, causes one to be greatly confused or shocked
![{one's} jaw [drop] (open|) definition and meaning](https://cdn.langeek.co/photo/45208/original/?type=jpeg "{one's} jaw [drop] (open|) definition and meaning")
Idiom
Informal
例
My jaw dropped open when she told me how old she was.
Our jaws dropped when we found out how much they were paying in rent.
