off the chain vs psycho

off the chain

prep

  • Free from work or direct supervision. 

  • Crazy and exciting; delirious and wild. 

psycho

noun

  • A person who acts in a bizarre or dangerous manner. 

  • A class, at a college or university, in which psychology is taught. 

  • A person who is psychotic or otherwise insane. 

adj

  • Psychotic or otherwise insane. 

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