The Logical Origin

.....of  Life
Achu: Amma I came from Acha's tummy?
Amma: No you didn't ...you came from mine. All babies come from the mother's tummy
Achu: Oh! I thought boys come from boy's tummy and girls come from girl's tummy :)

 ....of  Names
Achu: Amma babies come from the mother's tummy right?
Amma: Yes baby
Achu: Then why do we have to put the father's name after our name instead of the mother's name???
Amma: Ask your dad :)...and let's change your name with my name at the end ok :):):)