pocket pool vs self-pleasing

pocket pool

noun

  • The act of manipulating one's genitalia through a trouser pocket; masturbation. 

  • A variation of the game of pool. 

self-pleasing

noun

  • masturbation 

adj

  • That pleases oneself; given over only to one's own pleasure. 

How often have the words pocket pool and self-pleasing occurred in a corpus of books? (source: Google Ngram Viewer )