Technicolor yawn vs sprog

Technicolor yawn

noun
  • An act of vomiting. 

sprog

verb
  • To produce children. 

  • To ejaculate, to come. 

noun
  • A child. 

  • A new recruit. 

  • A deflection-limiting safety device used in high performance hang gliders. 

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