booby prize vs wooden spoon

booby prize

noun
  • A prize or status, often unwelcome, awarded as a joke or disincentive to the loser of a contest or for poor performance. 

wooden spoon

noun
  • An ironic prize for finishing last in a competition. 

  • A spoon made from wood, commonly used in food preparation. 

How often have the words booby prize and wooden spoon occurred in a corpus of books? (source: Google Ngram Viewer )