dingleberry vs prat

dingleberry

noun
  • A stupid or foolish person. 

  • Vaccinium erythrocarpum, the southern mountain cranberry. 

  • Dried fecal matter adhering to anal hair. 

prat

noun
  • A fool. 

  • A cunning or mischievous trick; a prank, a joke. 

  • The female genitals. 

  • A buttock, or the buttocks; a person's bottom. 

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