cumshot vs nads

cumshot

noun
  • A trail or splodge of semen. 

  • A sex act in pornographic films in which a man ejaculates onto his partner's body. 

  • The portrayal of ejaculation. 

nads

noun
  • The testicles. 

  • Courage; strength of will. 

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