Nupital
The side of things that no one can see; that which is not readily visible.
the dark side of the moon, the core of the Earth, inside your own rectum without a mirror, etc.
"Wow dude did you see goatse.cx?
I can't do it because its nupital."
"Wow dude did you see goatse.cx?
I can't do it because its nupital."