Looking at his friend's baby brother
Little Man: Is that a baby?
Mommy: Yes
Little Man: We don't got a baby.
Mommy: No, we sure don't.
Little Man: Mommy, we need a baby.
Later that night
Daddy: Did you see a baby today?
Little Man: Yes
Daddy: Do you want a baby?
Little Man: Yes
Daddy: Do you want a brother or a sister?
Little Man: Umm... a brother!
Daddy: Don't you want a little girl?
Little Man: Yes, I want a girl brother.