a term, much like "bitchassness," used to describe individuals or acts that are shady, back-stabbing and/or dishonest; can also be used to describe acts of questionable fidelity, such as 'creepin'' with your friend's girl
"Did you see Darius chillin' wit Chinika the other day?"
"Yeah, bruh, that's fucked up. Chinika is Darrell's girl."
"See, bruh, that's the kinda fuckassery I can't stand!"
"I was tryna talk to dis nigga, but couldn't understand his azz, he wuz speakin' Fuckanese. I don't understand that shit nigga, I'm from Realniggalia."
Hey, what's up with your friend always in the middle of something? Everytime I turn around he's always on the front line for some bs...what is he, an active duty, fulltime fuckantry?