hump it vs skidoo

hump it

verb
  • To depart in a hurry; to flee. 

skidoo

verb
  • to depart, especially to depart quickly 

  • a nonsense word, often an expression of disrespect 

  • To drive or ride on a snowmobile 

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