Which is a somewhat more positive way of saying that they rhyme with the wrong enunciation. Which is a totally valid way to construct lyrics in music - you have a bit of artistic leeway and the exact "correct" pronunciation isn't exactly important - but it's probably not too helpful for a listener who's trying to work out how those words were actually spoken in conversation.
That said, I'd be far more concerned about a future linguist discovering Prisencolinensinainciusol.