Innocence of children

[BRIMAR]

Boy aged 4 : Dad I've decided to get married
Dad : Wonderful, do you have a girl in mind
Boy : Yes .... Grandma! She said she loves me; I love her too ... and she is the best storyteller and cook in the whole world.
Dad : That's nice, but we have a small problem there!
Boy : What problem?
Dad : She happens to be my mother. How can you marry my mother?
Boy : Why not, you married mine!!