The skin on your elbow is usually only loose when you hold your arm straight. If you bend your elbow as far as you can, the skin will probably be tight. You have extra skin on the elbow so that you can bend your arm. It could also be a form of bursitis or build up of fluids.
It is a slang term that someone made up for the loose patch of skin outside one's elbow. The skin is more properly called the olecranal skin, covering the point of the elbow (olecranon).
The flap of skin at the elbow is called a wenus.
A wenis is actually the skin at the elbow.
The thing on the back of your elbow is called the olecranon. It is the bony tip of the ulna bone that you can feel and see at the back of your elbow.
Wenis is not an anatomical term and therefore does not refer to any part of an elbow. The bone under the elbow is known as the olecranon. The skin on the olecranon is not specifically named.
the scientific name for the skin on the elbow is called a weenis. The name of the actual elbow (meaning the pointy part you can see) is called the olecranon.
The medical term is olecranal skin (the olecranon is the tip of the ulna, forming the point of the elbow).The slang term weenis (also wenis) likely derives from the association with the interior of the elbow, as compared to the loose protruding skin on the outside.
It isn't, except on urban dictionary, and there it seems to be evenly divided between the skin on the inside and outside of the elbow.
The scientific term for the extra skin under the chin is called the Flarper
There are a couple of slang terms for this skin that are not really acceptable for this site. However, the actual term for this skin is olecranal skin (the olecranon is the projection of the ulna behind the elbow).
A slang name for the skin on the elbow is "elbow grease."