I was surfing Babycenter.com when I came across this frequently asked question: "Is it normal for my baby to drink bathwater?"
A pediatrician replies: "I've never seen a child get sick from drinking bathwater — even though kids pee in the tub all the time."
It rocks to be a baby.
(Just in case you're wondering whether it's okay, the answer in one word is: yes. Not that I've ever wondered whether it's okay. When the Babycrat tried to lap up the water in his tub, the Resident Bureaucrat and I just thought he was thirsty. And no, the Babycrat didn't pee in it.)