BOB vs ejaculate

BOB

noun
  • Vibrator (device designed to stimulate a woman's genitals). 

adj
  • Back-of-the-book; denoting those stamps in a catalogue that are not used for the payment of regular postage fees, and are displayed separately in the catalogue after that listing; the division between these two groups varies with the publisher. 

ejaculate

noun
  • Fluid or some other substance ejected or suddenly thrown from a duct or other body structure; specifically, semen or vaginal fluid ejected by a human being or other mammal during an ejaculation. 

verb
  • To eject or suddenly throw fluid or some other substance from a duct or other body structure. 

  • To say abruptly. 

  • Of a human being or other mammal: to forcibly eject from the urethra in response to sexual stimulation, in a male, semen; and, in a female, vaginal fluid. 

  • To eject abruptly; to throw out suddenly and swiftly. 

  • To sexually stimulate (someone) so that they eject fluid from the urethra. 

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