He has a big mouth. 他是个大嘴巴。
You'd better not tell him,he has a big mouth.
Why did you tell it to everybody?I told you to keep a secret.You really have a big mouth.
A:Mary told me that you and your boyfriend are going to get married.
B:She really has a big mouth,I just told her yesterday.
Linus' Blanket-summer swing