Mummy or daddy... which one did your little one say first?

Most of my friends' babies said "Ma" or "Mama" first because of the amount of time they spent with their mothers after birth, reckon it's natural. But I do know one baby whose first words were "Da" - probably because her father spent 6 months of his paternity leave with the little baby girl while the mother went back to work almost immediately after confinement.