"The devil in I" - I or me?

[niina]

"The devil in I" is a song title, which is grammatically incorrect on purpose, because normally you'd say "the devil in me". I just don't know what is the purpose of using "I" instead of "me" in this case?

Is it an idiom or a colloquialism/slang?

Could someone please explain it?

 

[sdgraham]

If it's not a hypercorrection, it might rhyme with something in the lyrics.

Otherwise, you'll have to ask the songwriter.

Is it an idiom or a colloquialism/slang?

Not one that I've encountered.

 

[perpend]

Well, there's an outside chance that they are singing "The devil and (instead of "in") I", in the lyrics.

"The devil (and I) went down to Georgia ...".

 

[EStjarn]

Outside, my foot!

It's a recently released single by the American heavy metal band Slipknot. Here's a link to the lyrics, in which the chorus reads:

.
Step inside, see the Devil in I
Too many times, we've let it come to this
Step inside, see the Devil in I
You'll realize I'm not your Devil anymore
.​

I can imagine the phrase 'the devil in me' has been used a million times before and would have seemed worn-out as a 2014 song title.

It's true that 'I' somewhat rhymes with 'inside', but I would think that to be a smaller concern since lyrics are flexible when it comes to wording.