The skin on the elbow is technically referred to as olecranal skin. However, it is also commonly referred to as the "weenis" or "wenis," which are slang terms for the excess or loose skin at the joint of ones elbow. The term "weenis" is often used in a humorous or playful context, and it has become a popular trivia question and joke punchline. While some people may argue that the skin part of the elbow is what is called the wenis, it is still called an elbow in the real world.