Where's the Dimple?

On the baby's knuckle,
On the baby's knee;
Where will the baby's dimple be?

Baby's cheek or baby's chin;
Seems to me it would be a sin;

If it's always covered with a safety pin!

Oh, where will the dimple be?

author unknown

The above is a song that my mother sings to her grandchildren when they are bouncing on her knee. I wish I had an audio file of her singing it.