noun. The root cause of ass-kickery has been found, deep in the DNA of the butt-booter's own bippy.
Real citation: "but i thought it was a new year's resolution... or is that a joke? even so, i'd venture to say that he did it for the sake of testing his kickassitude or the increasing the overall level of his kickassitudinousness. yep. that's probably why he started it."
(Nov. 27, 2006, Zefrank.com: The Forum, http://www.zefrank.com/theforum_new/showthread.php?t=2532&page=3)
Made-up citation: "My Dunkin' Donuts coffee is full of sugar, cream, coffee, crack, and kickassitudinousness. Why are they not paying me? Whose head do I have to pee on to be their national spokesman?"