little boys' room vs shithouse

little boys' room

noun
  • Synonym of men's room: a public lavatory intended for use by men. 

  • A room belonging to or used by little boys, particularly their bedroom. 

shithouse

noun
  • An outhouse, an outbuilding used as a lavatory 

  • A coward: one who is overly fearful or timid. 

  • A filthy place. 

verb
  • To engage in persistent unsporting behaviour or gamesmanship; to play in a cynical, ugly manner; to cheat without being punished. 

adj
  • Of poor quality. 

How often have the words little boys' room and shithouse occurred in a corpus of books? (source: Google Ngram Viewer )