is a state of being similar to rowdy but at a 10-fold magnitude of intensity which also always involves copious amounts of intoxicating drink and questionable(awesome) decisions.
"Dude did you see Keegan last night he was crunk dancing all night like basically all the way to the floor, and then he jumped off the roof naked."
"Yeah he was pretty shitnasty
Pronounced "shnasty". Worse than nasty. Worse than shit. It's shitnasty.
"I found a sandwich in my locker, I think it was in there for over a year". "That's shitnasty!".