ding-a-ling vs ibex

ding-a-ling

noun
  • An eccentric or crazy person. 

  • The penis. 

  • The sound of a small bell; the sound of a fire engine bell. 

adj
  • Attractive. 

ibex

noun
  • An imaginary creature with serrated horns, somewhat similar to the heraldic antelope. 

  • A type of wild mountain goat of the genus Capra, such as the species Capra ibex. 

How often have the words ding-a-ling and ibex occurred in a corpus of books? (source: Google Ngram Viewer )