Derived from suffix -ness. It is the distinct aspect(s) exhibited by someone/something that makes he/she/it unique.
Example 1:
Person 1: "That tree has a certain kind of nessiness about it. I can't tell exactly what it is though."
Person 2: "I think it's the neon pink leaves."
Example 2:
Person 1: zomg i pwn!! im so 1337!!! itz part of my nessiness!!!!!!!
Person 2: So are your obsessions for lolcats.com and ebaumsworld.com.
Person 1: can i has cheeseburger?
Wanting to get with a chick who is younger than you?
Use the nastiness curve: Take your own age, half it and then add seven. Your answer shows the minimum age of how old a chick can be for you to get with her.
Person 1: "I want to get with this hot younger chick but I don't know whether it is correct or not"
Person 2: "Use the nastiness curve"
Person 1: "I am 18 years old, half of that is 9. 9 + 7 = 16"
Person 2: "If she's 16 or older you'll be just fine"
1. The element that adds the suffix -ness to any word that wouldn't normally contain the suffix, usually making the word more uber cool than before.
2. What makes the world go round, what you cannot forget, what keeps world peace. The world's state of war is the result of everyone having forgotten the Nessness.
Nurse Deb: “Dr. J here’s an alcohol swab for connecting that bag of pain medicine “
Dr J: “Not required, this isn’t a port... but I appreciate your level of Nursiness”