Did you know?

Bed time last night:

[snipped discussion of the esophagus, trachea, and small and large intestines, and solid waste]

Daughter (9yo): "So daddy, where does the liquid waste go?"

Dad: "The kidneys filter that out of the blood."

Daughter: "Oh, that's right. Daddy, did you know that the kidneys filter, like, 100 billion gallons of blood a DAY?"

Dad: (how do I respond to that?!) "Really? Wow. That's a lot."

Daughter: "Or maybe only 100. Maybe it was only like 4000 or 100."

Dad: "Yeah, that sounds closer."