I thought you were trying to be funny with the title so I looked up the lyrics to see what they actually are and, I never would have guessed, that's what they actually are.
Same as below61, I was quite surprised when I read the lyrics a while back. I didn' t suspect in the least that this line was actually Spanish, but then their pronunciation isn' t exactly stellar.
I thought it was pretty clear. I mean, I asked a definite question of "Why does it not surprise me that you listen to this?" so I don't really see much room for loss of clarity.
Maybe it seemed unlcear to me because the question itself was directed at me, but I don't know the answer to it and could not possibly know it being as it relies on your perception of me. That led me to believe that the question was layered in meaning and perhaps was actually a statement in disguise!