fat as a pig vs tubby

fat as a pig

phrase

  • Exceptionally fat or obese. 

tubby

adj

  • Resembling a tub; sounding dull and without resonance or freedom of sound. 

  • stout, rotund 

noun

  • An overweight person. 

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