Probably some of the most memorable lyrics nobody ever knew or understood were those in Louie Louie by The Kingsmen.
Due to the dominant music and slurred words everyone seemed to put their own interpretation to the obscured lyrics.

According to wikipedia :
The Kingsmen's edition was the subject of an FBI investigation about the supposed but non-existent obscenity of the lyrics, an investigation that ended without prosecution.

For the record, the actual lyrics are:

CHORUS:

Louie Louie, oh no
Me gotta go
Aye-yi-yi-yi, I said
Louie Louie, oh baby
Me gotta go

Fine little girl waits for me
Catch a ship across the sea
Sail that ship about, all alone
Never know if I make it home

CHORUS

Three nights and days I sail the sea
Think of girl, constantly
On that ship, I dream she's there
I smell the rose in her hair.

CHORUS

Okay, let's give it to 'em, right now!

GUITAR SOLO

See Jamaica, the moon above
It won't be long, me see me love
Take her in my arms again
Tell her I'll never leave again

CHORUS

Let's take it on outa here now
Let's go!!

Ahhh, the amazing power of muscic!!