Fact of Life #5: The back of your knee is called the popliteal fossa.
Well. That’s no fun. So let’s coin a word here and call it the… kneenis. Because the extra lil flap of skin on your elbow is called your weenis (Thanks to Friends. What a great show).
Fact of Life #5.5: The back of your knee should be is called the kneenis.
