Lyric discussion by AJRimmer 

Cover art for My Evil Twin lyrics by They Might Be Giants

I'd say it's less like Fight Club and closer to Dexter. It seems less seperate, like just his bad side. I like the part with the evil twin running home again, but says "I'll" be home by then. The song seems to focus on them being the same guy, like everyone's saying, but I think it's more about the narrator dissociating his own bad behaviour, and his friends know full well what he's really like, but he's sticking with the "who, me?" sort of innocence for his own sake. It reminds me a lot of something with the character my screenname is from, where instead of reconciling something he did, he flat out denies it to a witness, going "True, he did it, but it just wasn't like him" (it is). I think that line sums up the general meaning of this song as well.

I think some or most of the blame might be his own.