LOL, I hadn't heard anything before now I hear that sound too, but differently than some of you it doesn't annoy me at all, I can hear something simmilar through almost the whole song from drums, I think it has to be there
I've heard songs from other artists that used one single sound just once in the song and that sound HAD to be there. I think those things actually make the song more interesting melodicaly/instrumentaly. I honestly love annalysing those things, and find them in the song