The First Cut Is The Deepest

Scene: A bedroom in Bucks County, Pennsylvania.

My brother puts his two baby sons down to sleep in their cribs. He tells them to go to sleep, it's bedtime.
As soon as he closes the door he hears them giggling and chirping to each other in their little baby language (and what I wouldn't give for a recording!).
He opens the door. Stern. "Boys, go. to. sleep. Nicholas, you go to sleep."

As he softly shuts the door he hears from one of the cribs, just as stern,
"YOU go seep, Dada!"