From en.wikipedia.org:
[mum's the word] MUM'S THE WORD is an English idiom for keeping silent.
MUM'S THE WORD may also refer to:
- _Mum's the Word_ (film) , a 1996 Canadian documentary short film - _Kingsman: Mum's the Word_ , a 2016 British one-shot comic book in the _Kingsman_ franchise - "Mum's the Word" ( _Bless This House_ ) , a 1971 television episode - "Mum's the Word" ( _Miranda_ ) , also known as "Holiday", a 2009 television episode
** See also
- "Mom's the Word ", a 2014 episode of _Family Guy_ - "Mom's the Word!", a 1988 episode of _The Raccoons_ [disambiguation]