Serena Williams — big butt... and a weaveBeyonce — big butt... and a weaveMichelle Obama — big butt (Barack knows it!)... and a pressI'm no anthropologist but I think it's fair to say that big, round butts are most common to black women — women of African descent.My boyfriend went to the African country of Ghana a few years back, and some Ghanian men sat him down and explained to him that a