On Page 14 of the FBI document, someone did include what they thought the words to the song were. (Warning, they are not safe for work.) Here are the actual, full lyrics: Louie, Louie ...

"Louie Louie," recorded by the Kingsmen ... And he says when kids couldn't understand the song, they came up with their own lyrics. Dirty lyrics. "We were on the front page of every newspaper ...

Are you hearing something that we’re not? The FBI did. They spent two years investigating the song, "Louie, Louie" and its lyrics for obscene messages. The song, famously mumbled by The Kingsmen ...