An adjective describing the insane mannerisms and guitar stylings of Kerry King.
Guy one: Did you hear the new Slayer album?
Guy two: Yeah dude, it was kerrazy!!
Guy three: I have no idea how to write decent guitar solos
Guy four: Just take your pick and go kerrazy!
Guy five: Kerry King's solos sound like shit
Guy six: If he heard you say that, he would rip your head off, then go kerrazy on your mom... and possibly your grandmother for good measure