shoot your mouth off 信口胡言；信口开河；胡说八道

【例句】
Actually, honey, you did kinda shoot your mouth off.
确实亲爱的你似乎是信口开河的。

If you shoot your mouth off like that one more time, I won't tell you anything in the future.
要是你下次再这么胡说八道，以后我什么也不告诉你了。