round the bend vs unzipped

round the bend

prep
  • Crazy, mad or insane. 

  • Close to or in close proximity to another location. 

unzipped

adj
  • Not zipped (closed with a zip fastener). 

  • Not zipped (compressed into a single and often smaller file, especially a zip file). 

How often have the words round the bend and unzipped occurred in a corpus of books? (source: Google Ngram Viewer )