crazy bone

English

Noun

crazy bone (plural crazy bones)

1. The funny bone; the ulnar nerve in the elbow.
   • 1830, Mrs. John Farrar, The Children's Robinson Crusoe‎^[1], page 318:

     I have seen a person in England, who had touched a torpedo; and he said the shock it gave him, was like striking that tender part of the elbow, which we call the crazy bone, very hard indeed;

   • 2008, Thomas S. Purtell, Natural Martial Arts‎^[2], page 34:

     My hand was at his elbow, my fingers just at the indentation of his elbow, just about where you bump the nerve point everyone calls the “crazy-bone”.