guido vs pizza nigger

guido

noun
  • a stereotypical working-class or lower-class and usually urban-dwelling Italian-American male; sometimes more generally a stereotypical Italian or person of Italian descent 

  • A guidance officer. 

pizza nigger

noun
  • A person of Italian descent. 

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