This line has always made me laugh. from the overall mood of the song, one surely would suppose that the comma that I've placed in the middle of the line belongs there. but you can't actually hear commas or other punctuation in singing. nor does checking a lyrics site help much in trying to determine intended punctuation. even when various lyrics sites agree as to the words of a song, the punctuation that they indicate varies all over the place, and not a few lyrics sites omit punctuation altogether. but the overall sense of the song tells us that the comma surely must belong. but on hearing this line alone, it is equally possible to hear it without the comma, giving the line quite a different meaning and sense altogether!