bush pig vs fat person

bush pig

noun
  • A fat and very ugly woman. 

  • An African pig of the genus Potamochoerus; Potamochoerus porcus or Potamochoerus larvatus. 

fat person

noun
  • fat person; overweight person 

How often have the words bush pig and fat person occurred in a corpus of books? (source: Google Ngram Viewer )