Originally Posted by submissivegirl83
What is an N-curve?
The reverse of an upward curve - so an N curves down.
(u shape vs n shape)
There is a website I saw a few years ago where some guy did a research project on this. He took lots of pictures of penises against a background of graph paper to show the differences between straight, U-curve, and N-curve.
Anyway that's where I heard about it.
I can't seem to find it with a google, but if I do I will come back and link it.