Lyric discussion by Philemon_Crowley 

"I've never had too much I've never had to lie I've never had to sacrifice my life"

Meaning: He's never had a life that was too challenging, things were easy until he became different.

"One of these shapes is not like the others " Meaning: Common question on aptitude and IQ tests, suggesting that HE is not like the others in his surroundings.

"I'm Socially Unacceptable, Unexceptional, Unsociable" Meaning: He broke from his unchanging world to become socially outcast, but at the same time people still speak to him because by breaking out he joined another stereotype.

All in all I think it means that he's fustrated that he can't get rid of stereotypes, by freeing himself of one he becomes another, Socially Unacceptable, but unexceptional stereotype.

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