bumfodder vs dingleberry

bumfodder

noun
  • Toilet paper. 

  • Bureaucratic or official documents. 

dingleberry

noun
  • Dried fecal matter adhering to anal hair. 

  • Vaccinium erythrocarpum, the southern mountain cranberry. 

  • A stupid or foolish person. 

How often have the words bumfodder and dingleberry occurred in a corpus of books? (source: Google Ngram Viewer )