Elbow

It is impossible to lick your elbow. Only mythical beings can hope to lick their elbows.

The tennis elbow condition (a common elbow injury) isn't always caused by tennis.

It's very hard to operate on an elbow as it lies in close proximity to a lot of important blood vessels and nerves.

Don't leave your elbows bent for long periods of time as you can get a case of ulnar neuritis, (inflammation of the ulnar nerve) which can lead to numbness or weakness of the fingers and hand. This is an especially common condition amongst lightnovel enthusiasts.

Scars on your elbow look different.

Elbows are known to be a rather destructive body weapon.

Your foot is the exact length of the space between your elbow and wrist. So long arms translate to big feet.

The funny bone is actually called the humerus bone and causes the weirdest kind of pain you will ever feel.