my foot vs oh dear

my foot

intj
  • Indicates disapproval, disregard, disdain, disgust or disbelief. 

  • Used other than figuratively or idiomatically: see my, foot. 

oh dear

intj
  • An expression of dismay, concern, worry or disapproval. 

How often have the words my foot and oh dear occurred in a corpus of books? (source: Google Ngram Viewer )