beat the stuffing out of vs spank

beat the stuffing out of

verb
  • To beat very severely. 

  • To trounce, outdo, or triumph over. 

spank

verb
  • To hit very hard. 

  • To move rapidly. 

  • To beat, smack or slap a person's buttocks, with the bare hand or other object, as punishment, gesture, or form of sexual interaction. 

  • To soundly defeat, to trounce. 

noun
  • A slapping sound, as produced by spanking. 

  • An instance of spanking, separately or part of a multiple blows-beating; a smack, swat, or slap. 

How often have the words beat the stuffing out of and spank occurred in a corpus of books? (source: Google Ngram Viewer )