piff vs plonker

piff

noun

  • Piffle; nonsense; rubbish. 

verb

  • To throw something vigorously. 

adj

  • good or attractive. 

intj

  • An exclamation of annoyance or contempt; pish; pshaw. 

plonker

noun

  • A fool. 

  • A penis. 

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