Here's the juiciest bit:
When a father and mother love each other very much, they hug in a special way: the mother makes an oval, and the father squirms inside it. Then they have to deceive the baby. Not all mothers can deceive babies. Some are too old, and some are in Fresno. Sometimes, when a mother and father can’t deceive a baby on their own, they have to use artful impersonation.