pisser vs small room

pisser

noun
  • A toilet or urinal. 

  • That which pisses, particularly a penis. 

  • A disappointing or frustrating situation or event. 

  • A pub. 

  • An extremely amusing person or thing. 

  • One who pisses. 

  • Someone or something impressive or remarkable. 

  • Synonym of piss clam 

small room

noun
  • A lavatory: a room intended for urination and defecation. 

  • Used other than figuratively or idiomatically: see small, room. 

How often have the words pisser and small room occurred in a corpus of books? (source: Google Ngram Viewer )