Bodies Without Organs or Butts

Digging through some used books recently, I found a title that would catch the eye of any boy aged 8 to 80, The Day My Butt Went Psycho. The book, it turns out, is the first in a "butt triology" written by Australian kid's author, Andy Griffiths. The series has apparently been extremely successful in its explicit mission to give young boys a reason to quit playing video games and pick up a book. Wikipedia describes the plot:

This odd historical parallel in absent organ (anatomy?) stories raises a number of interesting questions:
*What exactly are the links between the "magical thinking" of infantile narcissism and the psychotic delusions of adulthood?
*Is the Scholastic Book Service, fresh from transforming a generation of kids into future witches, now turning its attention to cultivating the next wave of schizophrenia?
*Can young boys be compelled to read only if it involves some strange mixture of Dadaism, paranoia, and the abject?
*How exactly would a cadre of rebellious butts "switch places" with our heads, and if they did so, what would become of our heads? What would replace our former butts?
I can't say that I will ever read The Day My Butt Went Psycho, but I am happy to file it next to my copy of Schreber's Memoirs of My Nervous Illness. Both are guides to logics wholly alien to the putatively rational mind--the sophomoric and the psychotic.