I have found myself singing this song to my little baby. Honestly, I hadn't thought of the song in years (maybe decades), but somewhere from the recesses of my memory it just came out.
I looked it up on You Tube to see if I was singing it right. What I found was much creepier than I remembered. I guess my mind had blocked out all the creepiness for a good reason...
If you're brave, check out the video: http://youtu.be/EEEsX69iIxY .