dingleberry vs dolt

dingleberry

noun
  • A stupid or foolish person. 

  • Vaccinium erythrocarpum, the southern mountain cranberry. 

  • Dried fecal matter adhering to anal hair. 

dolt

noun
  • A stupid person; a blockhead or dullard. 

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