The term "funny bone" is actually a pun on the name of this upper arm bone
funny bone synonyms, funny bone pronunciation, funny bone 
... A nerve, not a bone; the name is a pun on the humerus, the arm bone that gets 
... and upper arm and the corresponding joint in the forelimb of a quadruped ... 
funny  Funny - I'm Really Puzzled  Funny Animal Heroes  funny as a barrel of... [DOC] [TLE] What is the Funny Bone, and Why Does Hitting It Hurt So Much ... [PAR] Apr 3, 2014 ... Where'd the name come from, and why is it so painful?