Define Jesus Of Surbubia Meaning

Song appearing on the 2nd track of Green Day's album, American Idiot.
Some believes that he has a split-personality disorder and the St.Jimmy is his other personality.
He is the main character throughout the story in American Idiot. He is a son of a divorced mother who, apparently, is with Brad. He is on 'a steady diet of soda pop and Ritalin.'
He claims that there is nothing wrong with him, and that he is just being himself.
He loiters around 7.11 while doing drugs, cigarettes and alcohol. But later on in the song, he gets sick of his town and decides to leave, moving on to the next song, Holiday.