打错洞口英语怎么说

"打错洞口" 英文表达是 "to dig one's own grave", 意思是自己祸害自己，为自己造成危害。这个短语来源于英语成语 "to dig one's own grave"，意思是自己为自己埋坟墓。
例句：
He's digging his own grave by lying to his boss. 他对老板说谎，自己挖了个坟墓。
By refusing to admit her mistake, she's digging her own grave. 她拒绝承认她的错误，正在自己为自己挖坟墓。
He's digging his own grave with that attitude. 他那种态度正在为自己挖坟墓。