LIW Improv Theater 51 - Explain Song Lyrics 8 (ICP's Mr. Johnson's Head)

ICP is a band made up of Kabuki painted garbage bags. This song is a confusing mess. Does nobody see you or does someone sometimes see you some of the time but nobody else does? Are you dead? Are you a ghost? Are you dying over and over in different ways? Why did you cut off your teacher's head and leave the body so close to where you are? If you left his body right outside the classroom, I doubt you would be in class to sit in front of a substitute teacher. I'm confused. ICP stands for I Can't Possibly (listen any further).