Weenis
Wenis yes sounds weird but it is!
The flap of skin at the elbow is called a wenus.
Yes and no. Wenis is a slang term that is used to refer to the skin at the end of the elbow, but the word itself is not acknowledged as formal. The medical name would be olecranal skin, referring to...
It is called the olecranal skin. Anyone who uses the term "weenis" is a moron.