itchy vs racing one’s motor

itchy

adj
  • Feeling an itching sensation; feeling a need to be scratched. 

  • Having a constant, teasing desire (for something, to do something); impatiently eager. 

  • Causing a constant, teasing desire for something. 

  • Characterized by itching. 

  • Causing an itching sensation. 

  • In a state of agitation; easily alarmed. 

racing one’s motor

How often have the words itchy and racing one’s motor occurred in a corpus of books? (source: Google Ngram Viewer )