A : Can I ask you to bite your tongue? B : Did I say something wrong? A : No. But I'm keeping it a secret. * keep it a secret 비밀로 하다. keep mum 잠자코 있다. keep mum about sth. Mum's the words. = Don't tell anyone. 너만 알고 있어. 조용히 있는게 좋아. I didn't blunder on purpose. (고의로 실수한거 아니야) I didn't burp on purpose. ( burp : 트림하다. ) I didn't forget on purpose. A : How could your not remember my birthday? B : I d..