Talk:Mum's the word

not an idiom
If an idiom is a phrase for which the literal and figurative meaning's differ, then this is not an idiom (as mum mean's silent, and mum's the word means that you keep something quiet or umcommunicated). — Preceding unsigned comment added by 63.156.165.6 (talk) 20:19, 26 June 2014 (UTC)