Hook line and sinker
指完全被欺骗或上当，毫无保留地相信谎言。
形容完全被骗
英文释义
to completely believe or fall for something, often used to describe someone who is easily deceived
例句
He fell for the scam hook, line, and sinker, losing all his savings.
典故来源
源自钓鱼术语，钩、线、坠子全被鱼吞下，比喻被骗得彻底。