ay vs firetruck

ay

intj
  • Ah! alas! 

  • All right (inter); hooray (inter); cool (inter). 

  • New Zealand spelling of eh (question tag) 

noun
  • The name of the Latin-script letter A. 

firetruck

intj
  • Fuck. 

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