roger vs show someone one's etchings

roger

verb
  • Of a man, to have sexual intercourse with (someone), especially in a rough manner. 

  • To have sexual intercourse. 

  • To acknowledge by saying "roger". 

noun
  • An act of sexual intercourse. 

intj
  • Received (used in radio communications to acknowledge that a message has been received and understood) 

show someone one's etchings

verb
  • A clichéd innuendo used to offer to bring someone to a private location in order to have sex, to show a place where people can engage in sexual intercourse (alternatively replacing "someone" with a phrase starting with to) 

How often have the words roger and show someone one's etchings occurred in a corpus of books? (source: Google Ngram Viewer )