Lyric discussion by chalkaholica 

Cover art for Psycho lyrics by System of a Down

I think the song is about a certain girl ,the writer of this song has met. She was a groupie, and a coke addict , maybe even a little crazy.... but he might have fallen in love with her , so he told her to quit the shit , and that she doesn't need to be a ho , to get into the show. The girl probably died of an overdose , so he dedicated that song to her.... now am I smart or what eh?

the same exact interpretation I had for this song.