Pronounced : Skit-zo
Generally used to describe an angry person, also used to describe ones outburst of rage.
Comes from the word Schizophrenia.
Person 1: "Did you see Merv? he went completely scitso!"
Person 2: "Really?"
Person 1: "Yeah he punched a hole in the wall and smashed someones head through the window"
Person 2: "What a Scitso"