In line at the bank yesterday, there was one of those snoburban moms behind me who was chattering away to her four year old: "You looked at art today at school - what was it? Monet? Renoir? Picasso? What did you learn?" and other loud questions, for all of us to hear.* That's because her child is the only child in the universe, and none of us ever has had children.
* We had the Appalachian equivalent of this in my hometown, when the old guy at the front of the city bus would talk to the bus driver about his goiter.