Lyric discussion by Grebulous 

Cover art for Down Home Town lyrics by Electric Light Orchestra

What does it mean to "grow a third eyebrow"? I have tried to come up with a reasonable explaination for it, I have looked at books of expressions and cliches, I have tried contacting Jeff Lynne, I have asked all of my friends. It's really bothering me. Is even a real figrue of speech, or something ELO came up with, If you could tell me what that means, I would greatly appreciate it.