off the chain vs zany

off the chain

prep
  • Free from work or direct supervision. 

  • Crazy and exciting; delirious and wild. 

zany

adj
  • Unusual and awkward in a funny, comical manner; outlandish; clownish. 

  • Ludicrously or incongruously comical. 

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