funny bone
- a place on the inner elbow where the ulnar nerve passes close to the surface: a sharp impact at this place causes a strange, tingling sensation in the arm
- inclination to laughter; (one's) risibilities
See funny bone in American Heritage Dictionary 4
noun Informal - A point on the elbow where the ulnar nerve runs close to the surface and produces a sharp tingling sensation if knocked against the bone.
- A sense of humor.
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