Can kids understand this?

Caleb likes to chatter away non-stop when we get in the car to go places. He just goes on, and on, about anything he can think to talk about. This afternoon, we had to go to an appointment, and he started up with his yakking. He had so much to say, and the questions were non-stop. I kept answering him with a "Yep, uh-huh, yes..." Then, he said, "Mom, I am sure full of questions!" Do you think he was catching that I was not really paying attention, or just that he realized that he was chatting non-stop with questions?

It was really rather funny...