Whatever made-up 'creepy' answer we could have come up with was trumped by that first lady's response. She beat us at our own game and wasn't even playing.
The Kikuyu of Kenya place it in an uncultivated field and cover it with grains and grasses, while other cultures bury it in the dirt floor of the family's house.
Some African nations swaddle the placenta in blankets and bury it beneath a tree as a tree symbolizes ongoing life.