This is the back part of the knee on
men or women. Also known as the "Legendary Fourth Hole" in women. You can only see the dinkus from exactly the right angle much like the entrance to
Hogwarts.
Multiple: Dinkii, (
dink-eye)
Dude, I've got massive dinkus sweat...
Man 1: What'd you do last
night?
Man 2: I did this chick in the dinkus last
night. Hands down best sexual experience of my life.