Sort of self-explanatory, but not really.
One of my hobbies is spelunking (geology, in general), and "striated" basically denotes the variations in colors and materials of rocks.
I then take that axiom a step further, in terms of using it as my inter-web identity, where it extends to mean (in my quirky mind) that I am a unique and complex system of various physiological and psychological layers.
"XB" = Xtreme Badass... okay, it's because I own an XB.