ass over teakettle vs hell-for-leather

ass over teakettle

adv

  • Frantically. 

  • Tumbling upside down. 

adj

  • In complete disarray. 

hell-for-leather

adv

  • As fast as possible; recklessly fast. 

How often have the words ass over teakettle and hell-for-leather occurred in a corpus of books? (source: Google Ngram Viewer )