text: when was the last time you hit your funny bone? what is a funny bone? why do they call it that? about a week ago. your funny bone is actually not a bone it is the ulnar nerve in your elbow. this is the only place on your body that is not covered by cartilage or bone. thats why it hurts so bad when you hit it... right on the spot! its called the funny bone because the nerve runs through your humerus bone which is located by your bicep.