Sarah and the budding sense of humor

A few days ago, after Sarah and I had spent a chunk of the morning next door, I asked her, "Did you like playing with Sam?"

"Gup!" (That's "yup," for those of you who aren't fluent in Sarah.) "Ooo-ooo-ah-ah-ah!"

"Do you think Sam is a monkey?"

"Gup!" And then her great belly laugh: "Hahahahahahahaha!"

A joke! She made an actual joke. This is going to be one entertaining ride.