For most people, it is called practically impossible.
(There is no medical term for this activity.)
no it's called elbow fat
The flap of skin at the elbow is called a wenus.
The flat part of your elbow is called the olecranon.
The skin on the back of one's elbow is called olecranal skin, or colloquially, a weenis.
chewing like a cow
The bend of your elbow is called the antecubital fossa.
A wenis is actually the skin at the elbow.
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 shoulder is called the glenohumeral joint, and the wrist is the radiocarpal joint but the elbow is pretty much just called the elbow.
the antecubital space
An elbow extender is commonly referred to as an "elbow brace" or "elbow splint." It is designed to immobilize or support the elbow joint, often used to aid recovery from injuries, surgeries, or conditions like tendonitis. Some specific types may be called "hinged elbow braces" or "static elbow extension splints," depending on their design and function.
The elbow strap commonly used for tennis elbow is called a "counterforce brace" or a "tennis elbow strap." It helps to relieve pain and reduce strain on the tendons of the forearm muscles during activities that may exacerbate tennis elbow symptoms.