From a New York Times story by Oliver Whang headlined “Do You Babble to Your Baby? So Does the Rest of the World.”:

We’ve all seen it, we’ve all cringed at it, we’ve all done it ourselves: talked to a baby like it was, you know, a baby.

“Ooo, hellooooo baby!” you say, your voice lilting like a rapturously accommodating Walmart employee. Baby is utterly baffled by your unintelligible warble and your shamelessly doofus grin, but “baby so cuuuuuute!”