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1.
Unbeknownst to many, the knee, like the elbow, has a wenis. This flap of skin is known as the kneenis.
I grabbed your kneenis!
by DepecheMoses July 03, 2006
 
2.
Like the weenis of the elbow, a kneenis is the bit of skin covering your knee
My kneenis feels like a pig
by mynameisgary March 18, 2009
 
3.
skin on the back of your knee
My kneenis itches.
by crazygasbag May 10, 2010
 
4.
A penis located on the kneecap.
Good thing the guy with the cleets had hit my shin otherwise he would have torn up my kneenis.
by The David November 13, 2003