boff vs pisser

boff

noun
  • A big laugh. 

  • A great success; a hit. 

  • A pupil who works hard; a swot. 

  • A line in a film etc that elicits such a laugh. 

  • A hit or smack. 

verb
  • to have sexual intercourse (with someone) 

  • To hit; to strike. 

pisser

noun
  • An extremely amusing person or thing. 

  • That which pisses, particularly a penis. 

  • A disappointing or frustrating situation or event. 

  • A pub. 

  • A toilet or urinal. 

  • One who pisses. 

  • Someone or something impressive or remarkable. 

  • Synonym of piss clam 

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