A tail?

The girls and I were talking this morning about what we were doing today. I happened to mention that we would go visit family as long as the baby is happy in my belly. Jaycie said "he have a tail on his bum". Where do they come up with these things? I began to tell her that she was incorrect. The baby would not have a tail. That is when I realized she was referring to one of her little boy cousins. "Yeah," Jaycie reiterated. "Owen have a tail on his bum!" She was confused by my laughter so I just said, "You're right, Jay. Boys are different from girls." Laughing some more, I made certain Rod had heard.