not be born yesterday
成語所屬單字born
not be born yesterday — 慣用語
1. Someone is not stupid or easily fooled.
1.慣用語
釋義
不是三歲小孩
Someone is not stupid or easily fooled.
例句
You think I'd believe that? I wasn't born yesterday.
Maya wasn't born yesterday; she knows a lie when she hears one.