Every parent does this to their children. They take pictures of the kid in the bathtub with someone you are related to. Then later in life, the kids themselves become grossed out as everyone is browsing the pictures.
So I figure you have to do it to your children to keep the tradition alive. Even better — now we get to post the pictures on the Internet! Here are the cousins in the bathtub after a day at the beach. Notice Christian’s skillfully placed duck.
At one point, Christian, obviously thrilled with the situation, smacked Sydney. So they were moved separate ends of the tub I guess.