noun. A very dudely quality.
Real citation: "Hee hee. I've had it for a while now. XD I'm all sneaky with the stalkerifficness, ne?"
(Chanie, Nov. 3, 2005, http://profile.myspace.com/index.cfm?fuseaction=user.viewprofile&friendid=2978963)
Made-up citation: "Stalkerifficness is next to Godliness--if your God is a fucking psycho."