Lyric discussion by Prunus 

Cover art for Sleeping in a Jar [Live] lyrics by Mothers of Invention, The

The only thing that I could connect this to is Diogenes, a founder of Cynicism. He lived in a jar, and has made extensive commentary on parricide, among other shocking things. I believe Zappa would certainly have been aware of who Diogenes was.

Positive
Subjective
Enjoyment
Philosophy
History
Cynicism
Diogenes
Awareness