Everyone probably has experienced the tingling, funny sensation when they hit the right spot on their elbows- the feeling is indescribably "weird." We call this spot the "funny bone." So what actually is this funny bone?
First of all, funny bone is actually not a bone- it is an ulnar nerve that surprisingly actually does not touch the ulna (forearm bone), but is very close to the humerus. It is also very close to the surface of the skin, which explains why even the slightest tap on the right spot can trigger the sensation.
The most obvious function of elbows is structure- it is a joint that connects both part of your arm. We often use elbows as a striking appendage, like a Muay Thai fighter "elbowing" another fighter. Perhaps this ulnar nerve is telling us not to hit each other?
PS. The opposite side of the elbow, commonly called the elbow-pit, is called cubital fossa.