tits up vs toes up

tits up

adj
  • Dead. 

  • Used other than figuratively or idiomatically: see tits, up. 

  • Broken; failed; inoperable. 

toes up

adj
  • dead, killed 

  • broken, completely failed so as to become inactive 

How often have the words tits up and toes up occurred in a corpus of books? (source: Google Ngram Viewer )