cum vs shoot one's load

cum

verb
  • To ejaculate. 

  • To have an orgasm, to feel the sensation of an orgasm. 

prep
  • Used in indicating a thing with two roles, functions, or natures, or a thing that has changed from one to another. 

noun
  • Semen. 

  • Female ejaculatory discharge. 

  • An ejaculation. 

conj
  • Used in indicating a thing or person with two or more roles, functions, or natures, or a thing that has changed from one to another. 

shoot one's load

verb
  • To ejaculate; to cum. 

  • To expend one's resources or one's opportunity, especially prematurely; to blow one's chance. 

How often have the words cum and shoot one's load occurred in a corpus of books? (source: Google Ngram Viewer )