Don’t Throw The Baby Out With The Bathwater!
Typically, family bathing required the father to go first, followed by the mother, and then the children in order of age from oldest to youngest. Thus, the last family member to bathe would be the youngest, otherwise known as the baby. This is where the phrase “don’t throw the baby out with the bathwater” came from. They literally wanted to ensure the bathwater was not emptied with the baby still in the tub!