Is there a baby in your belly?

We were in Dallas the other day and had a casual conversation in the car asking Cash if he wanted a brother? It was a passing conversation and it started because we were talking about adoption.
Anyway, today Cash and I were eating dinner and he asked, "Mom, is there a baby in your belly named Jett?" I laughed because there isn't but he was so perceptive to put together the possibility that I could have a baby in my belly.